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  MEAN WELL RSD-300 series: Railway DC/DC Converter - RSD-300C-5

  The MEAN WELL RSD-300C-5 is a fanless railway DC/DC converter with a 5 V output rated at 42 A and 210 W. Its C-code input supports continuous operation from 33.6–62.4 VDC and a separate 1-second input range of 28.8–67.2 VDC. The half-encapsulated enclosure provides 4 kVDC input-to-output isolation; available load depends on ambient temperature and the mounting heat-transfer arrangement. Product Datasheet Download MEAN WELL RSD-300 Datasheet (PDF) The RSD-300 section is on PDF pages 42, 43, 44, 45, 46, 47, 48, 49, 50, 51. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-300C-5 Series RSD-300 Input version C; nominal test input 48 VDC DC output voltage 5 V Rated output current 42 A Rated output power 210 W Output current range 0–42 A Output voltage adjustment Optional by request; not included in the standard product Maximum ripple and noise 100 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Use the voltage, current and actual rated power together when selecting the load. The family wattage designation does not replace the rating of this output and input version. The standard RSD-300 output is not user-adjustable. Request the optional voltage-adjustment configuration from the manufacturer when required. Input, Timing and Measurement Conditions Continuous DC input range 33.6–62.4 VDC 1-second input range 28.8–67.2 VDC Typical efficiency 90.5% Typical DC input current 4.8 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Normal measurement conditions 48 VDC input, rated load and 25°C ambient Supply interruption classification EN 50155:2021, S1 The 1-second range is a transient operating condition, not an extension of the continuous input rating. Keep the input within the continuous range for sustained use. Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. The manufacturer strongly recommends keeping external output capacitance at or below 5000 µF for this output-voltage version. The catalogue supplies a dedicated RSD-300C-5 hold-up-versus-load curve. Hold-up duration increases as the load is reduced; use that model-specific curve for interruption sizing rather than a single duration for every load. Protection and Input Safeguards Protection functions Short circuit, overload, overvoltage, overtemperature and input reverse polarity Overload threshold 105–135% of rated output power Overload response Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 5.75–7 V Overvoltage recovery Output shutdown; reapply input power to recover Overtemperature recovery Output shutdown; automatic recovery after cooling Input reverse polarity A MOSFET in series with the negative input opens and prevents output when polarity is reversed Internal input fuse reference Conquer UDA-A; time-lag; 16 A, 250 V Inrush limiting Start-up resistor bypassed by a MOSFET after start-up Do not operate continuously in the overload region: overheating can reduce service life or damage the converter. The internal fuse reference describes the installed protection component; it is not an external fuse-selection instruction. When input voltage falls below the undervoltage operating threshold, the controller stops the output. The output resumes automatically after the input rises sufficiently, provided no latched protection remains active. Power Terminals and Indicator Input 1 DC INPUT V+ Input 2 DC INPUT V− Input 3 FG Output 1, 2 DC OUTPUT −V Output 3, 4 DC OUTPUT +V LED status Green: normal operation; unlit: no power or a failure Connect the DC source and load with the polarities shown and connect FG to the installation protective-earth system. Size conductors and terminations for the current of this model. Use the mechanical drawing to identify the physical terminal positions. Leave space for terminal access and cable bends; the body dimensions do not include the full installed wiring envelope. Series Operation and Redundant Supply Connections Parallel current sharing No built-in parallel circuit; a parallel arrangement does not increase the converter current rating Redundant supply arrangement External positive-output isolation diode for each supply, with suitable heat sinking Series output arrangement Positive/negative rails or added output voltage; current rating does not increase For the illustrated redundant connection, each isolation diode must have a current rating greater than the maximum output current rating of its supply and must be fitted to an appropriate heat sink. Verify the completed external circuit for the intended load. Parallel supply connections increase leakage current. Confirm installation suitability with the supplier for this application. For the illustrated voltage-adding series connection, fit external blocking diodes as shown because the units do not contain reverse-blocking diodes. The external diode voltage rating must exceed V1 + V2. Follow the catalogue connection diagram and system insulation requirements. Cooling, Derating and Environment Cooling Free-air convection; fanless, half-encapsulated construction Working ambient temperature −40 to +70°C, subject to derating and mounting conditions Single-unit ambient load curve 100% load through 55°C; reduce to 60% at 70°C Additional heat-transfer plate 360 × 360 × 2 mm iron plate Operation with the specified iron plate 100% load from −40 to +70°C in the published installation Case-temperature curve 100% rated current up to 80°C at the marked tc point Working humidity 5–95% RH, non-condensing Storage temperature / humidity −40 to +85°C Temperature coefficient ±0.03%/°C over 0–55°C Operating altitude Up to 5000 m Altitude temperature derating Above 2000 m: reduce permitted ambient temperature by 3.5°C per additional 1000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting in accordance with IEC 61373 The ambient and case-temperature limits apply together. A permissible case temperature does not by itself waive the ambient-temperature load curve. To achieve the published full-load 70°C EN 50155 TX arrangement, firmly mount the converter centrally on the specified smooth, even iron plate with good thermal contact. Follow the illustrated orientation and mounting method. The half-encapsulated construction supports the installation orientations shown in the catalogue with the corresponding common derating curve. Safety, Isolation and EMC Catalogue-listed safety approvals UL 62368-1; IEC 62368-1; AS/NZS 62368-1; EAC TP TC 004 Additional safety design reference BS EN / EN 62368-1 Railway requirements BS EN / EN 50155 and IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance 100 MΩ between input–output, input–FG and output–FG at 500 VDC, 25°C and 70% RH Conducted emission BS EN / EN 55032 (CISPR 32), Class A Radiated emission BS EN / EN 55032 (CISPR 32), Class B EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035; light-industry level; EAC TP TC 020 Additional EMC conformity EAC TP TC 020 Confirm compliance of the completed installation with the applicable EMC and safety requirements. Component test results do not certify the entire vehicle or equipment. The component EMC tests use a 360 × 360 × 1 mm metal plate. This EMC test plate is distinct from the 360 × 360 × 2 mm iron plate specified for full-load 70°C thermal operation. Railway Environmental and Fire Test References The catalogue reports PASS for EN 50155 dry heat (section 13.4.5: 70°C for 6 hours and 85°C for 10 minutes); cyclic damp heat (13.4.8: 25–55°C, 90–100% RH, 48 hours); vibration (13.4.10: 19°C, 65% RH, 10 minutes); shock (13.4.10: 21 ±3°C, 65 ±5% RH, 30 ms ×18); low-temperature storage (13.4.6: −40°C, 16 hours); and salt mist (13.4.13: 35 ±2°C, 96 hours). These are test conditions, not expanded continuous operating limits. EN 45545-2:2020 fire-test references cover PCB R22 oxygen index (EN ISO 4589-2:2017), smoke density (EN ISO 5659-2:2017) and smoke toxicity (EN 17084:2018); PCB R24 oxygen index; PCB R25 glow-wire (EN 60695-2-11:2014); potting R24 oxygen index; and terminal-block R26 vertical flame (EN 60695-11-10:2013). HL1 and HL2 are marked PASS for every listed item. HL3 is marked PASS for the listed items except PCB R22 smoke density, for which no PASS result is listed. Mechanical Data and Installation Items Catalogue body dimensions, L × W × H 216 × 96.5 × 40 mm Case reference 205 Drawing tolerance ±1 mm Mounting layout 208 mm longitudinal reference; 4 × R2.1 mounting slots and the marked 2 × R2.1 side features Iron-plate fixing arrangement Four M4 screws at the illustrated positions Case-temperature measurement point Marked tc in the mechanical drawing Unit mass, catalogue PACKING reference 1190 g Catalogue packing 1.19 kg; 12 units / 15.3 kg / 0.97 CUFT Minimum MTBF 1850.1K hours, Telcordia SR-332 (Bellcore); 130.8K hours, MIL-HDBK-217F at 25°C Nominal switching frequency 130 kHz Catalogue warranty 3 years Capacitor specification 105°C long-life electrolytic capacitors Production test 100% full-load burn-in test The RSD-300 drawing separately shows terminal projections of up to 15 mm at each end. Allow these projections and the required wire-bend clearance beyond the body outline. The iron plate, fixings and any external connection components must be selected for the installation. Confirm supplied items with the order; the catalogue plate drawing does not establish that a separate plate kit is included. The mass is the explicit catalogue packing reference per unit, not a measured net mass or the weight of a complete shipping package.

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  MEAN WELL RSD-300 series: Railway DC/DC Converter - RSD-300B-48

  The MEAN WELL RSD-300B-48 is a fanless railway DC/DC converter with a 48 V output rated at 5.7 A and 273.6 W. Its B-code input supports continuous operation from 16.8–31.2 VDC and a separate 1-second input range of 14.4–33.6 VDC. The half-encapsulated enclosure provides 4 kVDC input-to-output isolation; available load depends on ambient temperature and the mounting heat-transfer arrangement. Product Datasheet Download MEAN WELL RSD-300 Datasheet (PDF) The RSD-300 section is on PDF pages 42, 43, 44, 45, 46, 47, 48, 49, 50, 51. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-300B-48 Series RSD-300 Input version B; nominal test input 24 VDC DC output voltage 48 V Rated output current 5.7 A Rated output power 273.6 W Output current range 0–5.7 A Output voltage adjustment Optional by request; not included in the standard product Maximum ripple and noise 180 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Use the voltage, current and actual rated power together when selecting the load. The family wattage designation does not replace the rating of this output and input version. The standard RSD-300 output is not user-adjustable. Request the optional voltage-adjustment configuration from the manufacturer when required. Input, Timing and Measurement Conditions Continuous DC input range 16.8–31.2 VDC 1-second input range 14.4–33.6 VDC Typical efficiency 91.5% Typical DC input current 14.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Normal measurement conditions 24 VDC input, rated load and 25°C ambient Supply interruption classification EN 50155:2021, S1 The 1-second range is a transient operating condition, not an extension of the continuous input rating. Keep the input within the continuous range for sustained use. Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. The catalogue supplies a dedicated RSD-300B-48 hold-up-versus-load curve. Hold-up duration increases as the load is reduced; use that model-specific curve for interruption sizing rather than a single duration for every load. Protection and Input Safeguards Protection functions Short circuit, overload, overvoltage, overtemperature and input reverse polarity Overload threshold 105–135% of rated output power Overload response Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 55.2–64.8 V Overvoltage recovery Output shutdown; reapply input power to recover Overtemperature recovery Output shutdown; automatic recovery after cooling Input reverse polarity A MOSFET in series with the negative input opens and prevents output when polarity is reversed Internal input fuse reference Littelfuse 257; fast; 30 A, 32 V Inrush limiting Start-up resistor bypassed by a MOSFET after start-up Do not operate continuously in the overload region: overheating can reduce service life or damage the converter. The internal fuse reference describes the installed protection component; it is not an external fuse-selection instruction. When input voltage falls below the undervoltage operating threshold, the controller stops the output. The output resumes automatically after the input rises sufficiently, provided no latched protection remains active. Power Terminals and Indicator Input 1 DC INPUT V+ Input 2 DC INPUT V− Input 3 FG Output 1 DC OUTPUT −V Output 2 DC OUTPUT +V LED status Green: normal operation; unlit: no power or a failure Connect the DC source and load with the polarities shown and connect FG to the installation protective-earth system. Size conductors and terminations for the current of this model. Use the mechanical drawing to identify the physical terminal positions. Leave space for terminal access and cable bends; the body dimensions do not include the full installed wiring envelope. Series Operation and Redundant Supply Connections Parallel current sharing No built-in parallel circuit; a parallel arrangement does not increase the converter current rating Redundant supply arrangement External positive-output isolation diode for each supply, with suitable heat sinking Series output arrangement Positive/negative rails or added output voltage; current rating does not increase For the illustrated redundant connection, each isolation diode must have a current rating greater than the maximum output current rating of its supply and must be fitted to an appropriate heat sink. Verify the completed external circuit for the intended load. Parallel supply connections increase leakage current. Confirm installation suitability with the supplier for this application. For the illustrated voltage-adding series connection, fit external blocking diodes as shown because the units do not contain reverse-blocking diodes. The external diode voltage rating must exceed V1 + V2. Follow the catalogue connection diagram and system insulation requirements. Cooling, Derating and Environment Cooling Free-air convection; fanless, half-encapsulated construction Working ambient temperature −40 to +70°C, subject to derating and mounting conditions Single-unit ambient load curve 100% load through 55°C; reduce to 60% at 70°C Additional heat-transfer plate 360 × 360 × 2 mm iron plate Operation with the specified iron plate 100% load from −40 to +70°C in the published installation Case-temperature curve 100% rated current up to 80°C at the marked tc point Working humidity 5–95% RH, non-condensing Storage temperature / humidity −40 to +85°C Temperature coefficient ±0.03%/°C over 0–55°C Operating altitude Up to 5000 m Altitude temperature derating Above 2000 m: reduce permitted ambient temperature by 3.5°C per additional 1000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting in accordance with IEC 61373 The ambient and case-temperature limits apply together. A permissible case temperature does not by itself waive the ambient-temperature load curve. To achieve the published full-load 70°C EN 50155 TX arrangement, firmly mount the converter centrally on the specified smooth, even iron plate with good thermal contact. Follow the illustrated orientation and mounting method. The half-encapsulated construction supports the installation orientations shown in the catalogue with the corresponding common derating curve. Safety, Isolation and EMC Catalogue-listed safety approvals UL 62368-1; IEC 62368-1; AS/NZS 62368-1; EAC TP TC 004 Additional safety design reference BS EN / EN 62368-1 Railway requirements BS EN / EN 50155 and IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance 100 MΩ between input–output, input–FG and output–FG at 500 VDC, 25°C and 70% RH Conducted emission BS EN / EN 55032 (CISPR 32), Class A Radiated emission BS EN / EN 55032 (CISPR 32), Class B EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035; light-industry level; EAC TP TC 020 Additional EMC conformity EAC TP TC 020 Confirm compliance of the completed installation with the applicable EMC and safety requirements. Component test results do not certify the entire vehicle or equipment. The component EMC tests use a 360 × 360 × 1 mm metal plate. This EMC test plate is distinct from the 360 × 360 × 2 mm iron plate specified for full-load 70°C thermal operation. Railway Environmental and Fire Test References The catalogue reports PASS for EN 50155 dry heat (section 13.4.5: 70°C for 6 hours and 85°C for 10 minutes); cyclic damp heat (13.4.8: 25–55°C, 90–100% RH, 48 hours); vibration (13.4.10: 19°C, 65% RH, 10 minutes); shock (13.4.10: 21 ±3°C, 65 ±5% RH, 30 ms ×18); low-temperature storage (13.4.6: −40°C, 16 hours); and salt mist (13.4.13: 35 ±2°C, 96 hours). These are test conditions, not expanded continuous operating limits. EN 45545-2:2020 fire-test references cover PCB R22 oxygen index (EN ISO 4589-2:2017), smoke density (EN ISO 5659-2:2017) and smoke toxicity (EN 17084:2018); PCB R24 oxygen index; PCB R25 glow-wire (EN 60695-2-11:2014); potting R24 oxygen index; and terminal-block R26 vertical flame (EN 60695-11-10:2013). HL1 and HL2 are marked PASS for every listed item. HL3 is marked PASS for the listed items except PCB R22 smoke density, for which no PASS result is listed. Mechanical Data and Installation Items Catalogue body dimensions, L × W × H 216 × 96.5 × 40 mm Case reference 205 Drawing tolerance ±1 mm Mounting layout 208 mm longitudinal reference; 4 × R2.1 mounting slots and the marked 2 × R2.1 side features Iron-plate fixing arrangement Four M4 screws at the illustrated positions Case-temperature measurement point Marked tc in the mechanical drawing Unit mass, catalogue PACKING reference 1190 g Catalogue packing 1.19 kg; 12 units / 15.3 kg / 0.97 CUFT Minimum MTBF 1850.1K hours, Telcordia SR-332 (Bellcore); 130.8K hours, MIL-HDBK-217F at 25°C Nominal switching frequency 130 kHz Catalogue warranty 3 years Capacitor specification 105°C long-life electrolytic capacitors Production test 100% full-load burn-in test The RSD-300 drawing separately shows terminal projections of up to 15 mm at each end. Allow these projections and the required wire-bend clearance beyond the body outline. The iron plate, fixings and any external connection components must be selected for the installation. Confirm supplied items with the order; the catalogue plate drawing does not establish that a separate plate kit is included. The mass is the explicit catalogue packing reference per unit, not a measured net mass or the weight of a complete shipping package.

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  MEAN WELL RSD-300 series: Railway DC/DC Converter - RSD-300B-24

  The MEAN WELL RSD-300B-24 is a fanless railway DC/DC converter with a 24 V output rated at 11.3 A and 271.2 W. Its B-code input supports continuous operation from 16.8–31.2 VDC and a separate 1-second input range of 14.4–33.6 VDC. The half-encapsulated enclosure provides 4 kVDC input-to-output isolation; available load depends on ambient temperature and the mounting heat-transfer arrangement. Product Datasheet Download MEAN WELL RSD-300 Datasheet (PDF) The RSD-300 section is on PDF pages 42, 43, 44, 45, 46, 47, 48, 49, 50, 51. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-300B-24 Series RSD-300 Input version B; nominal test input 24 VDC DC output voltage 24 V Rated output current 11.3 A Rated output power 271.2 W Output current range 0–11.3 A Output voltage adjustment Optional by request; not included in the standard product Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Use the voltage, current and actual rated power together when selecting the load. The family wattage designation does not replace the rating of this output and input version. The standard RSD-300 output is not user-adjustable. Request the optional voltage-adjustment configuration from the manufacturer when required. Input, Timing and Measurement Conditions Continuous DC input range 16.8–31.2 VDC 1-second input range 14.4–33.6 VDC Typical efficiency 90% Typical DC input current 14.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Normal measurement conditions 24 VDC input, rated load and 25°C ambient Supply interruption classification EN 50155:2021, S1 The 1-second range is a transient operating condition, not an extension of the continuous input rating. Keep the input within the continuous range for sustained use. Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. The catalogue supplies a dedicated RSD-300B-24 hold-up-versus-load curve. Hold-up duration increases as the load is reduced; use that model-specific curve for interruption sizing rather than a single duration for every load. Protection and Input Safeguards Protection functions Short circuit, overload, overvoltage, overtemperature and input reverse polarity Overload threshold 105–135% of rated output power Overload response Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Overtemperature recovery Output shutdown; automatic recovery after cooling Input reverse polarity A MOSFET in series with the negative input opens and prevents output when polarity is reversed Internal input fuse reference Littelfuse 257; fast; 30 A, 32 V Inrush limiting Start-up resistor bypassed by a MOSFET after start-up Representative 24 V output undervoltage graph Turn-off approximately 12 VDC; turn-on approximately 13.5 VDC Do not operate continuously in the overload region: overheating can reduce service life or damage the converter. The internal fuse reference describes the installed protection component; it is not an external fuse-selection instruction. When input voltage falls below the undervoltage operating threshold, the controller stops the output. The output resumes automatically after the input rises sufficiently, provided no latched protection remains active. The representative graph illustrates undervoltage hysteresis below the normal operating band; its plotted thresholds do not extend the permitted continuous input range. Power Terminals and Indicator Input 1 DC INPUT V+ Input 2 DC INPUT V− Input 3 FG Output 1 DC OUTPUT −V Output 2 DC OUTPUT +V LED status Green: normal operation; unlit: no power or a failure Connect the DC source and load with the polarities shown and connect FG to the installation protective-earth system. Size conductors and terminations for the current of this model. Use the mechanical drawing to identify the physical terminal positions. Leave space for terminal access and cable bends; the body dimensions do not include the full installed wiring envelope. Series Operation and Redundant Supply Connections Parallel current sharing No built-in parallel circuit; a parallel arrangement does not increase the converter current rating Redundant supply arrangement External positive-output isolation diode for each supply, with suitable heat sinking Series output arrangement Positive/negative rails or added output voltage; current rating does not increase For the illustrated redundant connection, each isolation diode must have a current rating greater than the maximum output current rating of its supply and must be fitted to an appropriate heat sink. Verify the completed external circuit for the intended load. Parallel supply connections increase leakage current. Confirm installation suitability with the supplier for this application. For the illustrated voltage-adding series connection, fit external blocking diodes as shown because the units do not contain reverse-blocking diodes. The external diode voltage rating must exceed V1 + V2. Follow the catalogue connection diagram and system insulation requirements. Cooling, Derating and Environment Cooling Free-air convection; fanless, half-encapsulated construction Working ambient temperature −40 to +70°C, subject to derating and mounting conditions Single-unit ambient load curve 100% load through 55°C; reduce to 60% at 70°C Additional heat-transfer plate 360 × 360 × 2 mm iron plate Operation with the specified iron plate 100% load from −40 to +70°C in the published installation Case-temperature curve 100% rated current up to 80°C at the marked tc point Working humidity 5–95% RH, non-condensing Storage temperature / humidity −40 to +85°C Temperature coefficient ±0.03%/°C over 0–55°C Operating altitude Up to 5000 m Altitude temperature derating Above 2000 m: reduce permitted ambient temperature by 3.5°C per additional 1000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting in accordance with IEC 61373 The ambient and case-temperature limits apply together. A permissible case temperature does not by itself waive the ambient-temperature load curve. To achieve the published full-load 70°C EN 50155 TX arrangement, firmly mount the converter centrally on the specified smooth, even iron plate with good thermal contact. Follow the illustrated orientation and mounting method. The half-encapsulated construction supports the installation orientations shown in the catalogue with the corresponding common derating curve. Safety, Isolation and EMC Catalogue-listed safety approvals UL 62368-1; IEC 62368-1; AS/NZS 62368-1; EAC TP TC 004 Additional safety design reference BS EN / EN 62368-1 Railway requirements BS EN / EN 50155 and IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance 100 MΩ between input–output, input–FG and output–FG at 500 VDC, 25°C and 70% RH Conducted emission BS EN / EN 55032 (CISPR 32), Class A Radiated emission BS EN / EN 55032 (CISPR 32), Class B EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035; light-industry level; EAC TP TC 020 Additional EMC conformity EAC TP TC 020 Confirm compliance of the completed installation with the applicable EMC and safety requirements. Component test results do not certify the entire vehicle or equipment. The component EMC tests use a 360 × 360 × 1 mm metal plate. This EMC test plate is distinct from the 360 × 360 × 2 mm iron plate specified for full-load 70°C thermal operation. Railway Environmental and Fire Test References The catalogue reports PASS for EN 50155 dry heat (section 13.4.5: 70°C for 6 hours and 85°C for 10 minutes); cyclic damp heat (13.4.8: 25–55°C, 90–100% RH, 48 hours); vibration (13.4.10: 19°C, 65% RH, 10 minutes); shock (13.4.10: 21 ±3°C, 65 ±5% RH, 30 ms ×18); low-temperature storage (13.4.6: −40°C, 16 hours); and salt mist (13.4.13: 35 ±2°C, 96 hours). These are test conditions, not expanded continuous operating limits. EN 45545-2:2020 fire-test references cover PCB R22 oxygen index (EN ISO 4589-2:2017), smoke density (EN ISO 5659-2:2017) and smoke toxicity (EN 17084:2018); PCB R24 oxygen index; PCB R25 glow-wire (EN 60695-2-11:2014); potting R24 oxygen index; and terminal-block R26 vertical flame (EN 60695-11-10:2013). HL1 and HL2 are marked PASS for every listed item. HL3 is marked PASS for the listed items except PCB R22 smoke density, for which no PASS result is listed. Mechanical Data and Installation Items Catalogue body dimensions, L × W × H 216 × 96.5 × 40 mm Case reference 205 Drawing tolerance ±1 mm Mounting layout 208 mm longitudinal reference; 4 × R2.1 mounting slots and the marked 2 × R2.1 side features Iron-plate fixing arrangement Four M4 screws at the illustrated positions Case-temperature measurement point Marked tc in the mechanical drawing Unit mass, catalogue PACKING reference 1190 g Catalogue packing 1.19 kg; 12 units / 15.3 kg / 0.97 CUFT Minimum MTBF 1850.1K hours, Telcordia SR-332 (Bellcore); 130.8K hours, MIL-HDBK-217F at 25°C Nominal switching frequency 130 kHz Catalogue warranty 3 years Capacitor specification 105°C long-life electrolytic capacitors Production test 100% full-load burn-in test The RSD-300 drawing separately shows terminal projections of up to 15 mm at each end. Allow these projections and the required wire-bend clearance beyond the body outline. The iron plate, fixings and any external connection components must be selected for the installation. Confirm supplied items with the order; the catalogue plate drawing does not establish that a separate plate kit is included. The mass is the explicit catalogue packing reference per unit, not a measured net mass or the weight of a complete shipping package.

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  MEAN WELL RSD-300 series: Railway DC/DC Converter - RSD-300B-12

  The MEAN WELL RSD-300B-12 is a fanless railway DC/DC converter with a 12 V output rated at 22.5 A and 270 W. Its B-code input supports continuous operation from 16.8–31.2 VDC and a separate 1-second input range of 14.4–33.6 VDC. The half-encapsulated enclosure provides 4 kVDC input-to-output isolation; available load depends on ambient temperature and the mounting heat-transfer arrangement. Product Datasheet Download MEAN WELL RSD-300 Datasheet (PDF) The RSD-300 section is on PDF pages 42, 43, 44, 45, 46, 47, 48, 49, 50, 51. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-300B-12 Series RSD-300 Input version B; nominal test input 24 VDC DC output voltage 12 V Rated output current 22.5 A Rated output power 270 W Output current range 0–22.5 A Output voltage adjustment Optional by request; not included in the standard product Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.3% Load regulation ±1.0% Use the voltage, current and actual rated power together when selecting the load. The family wattage designation does not replace the rating of this output and input version. The standard RSD-300 output is not user-adjustable. Request the optional voltage-adjustment configuration from the manufacturer when required. Input, Timing and Measurement Conditions Continuous DC input range 16.8–31.2 VDC 1-second input range 14.4–33.6 VDC Typical efficiency 89.5% Typical DC input current 14.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Normal measurement conditions 24 VDC input, rated load and 25°C ambient Supply interruption classification EN 50155:2021, S1 The 1-second range is a transient operating condition, not an extension of the continuous input rating. Keep the input within the continuous range for sustained use. Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. The manufacturer strongly recommends keeping external output capacitance at or below 5000 µF for this output-voltage version. The catalogue supplies a dedicated RSD-300B-12 hold-up-versus-load curve. Hold-up duration increases as the load is reduced; use that model-specific curve for interruption sizing rather than a single duration for every load. Protection and Input Safeguards Protection functions Short circuit, overload, overvoltage, overtemperature and input reverse polarity Overload threshold 105–135% of rated output power Overload response Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Overtemperature recovery Output shutdown; automatic recovery after cooling Input reverse polarity A MOSFET in series with the negative input opens and prevents output when polarity is reversed Internal input fuse reference Littelfuse 257; fast; 30 A, 32 V Inrush limiting Start-up resistor bypassed by a MOSFET after start-up Do not operate continuously in the overload region: overheating can reduce service life or damage the converter. The internal fuse reference describes the installed protection component; it is not an external fuse-selection instruction. When input voltage falls below the undervoltage operating threshold, the controller stops the output. The output resumes automatically after the input rises sufficiently, provided no latched protection remains active. Power Terminals and Indicator Input 1 DC INPUT V+ Input 2 DC INPUT V− Input 3 FG Output 1 DC OUTPUT −V Output 2 DC OUTPUT +V LED status Green: normal operation; unlit: no power or a failure Connect the DC source and load with the polarities shown and connect FG to the installation protective-earth system. Size conductors and terminations for the current of this model. Use the mechanical drawing to identify the physical terminal positions. Leave space for terminal access and cable bends; the body dimensions do not include the full installed wiring envelope. Series Operation and Redundant Supply Connections Parallel current sharing No built-in parallel circuit; a parallel arrangement does not increase the converter current rating Redundant supply arrangement External positive-output isolation diode for each supply, with suitable heat sinking Series output arrangement Positive/negative rails or added output voltage; current rating does not increase For the illustrated redundant connection, each isolation diode must have a current rating greater than the maximum output current rating of its supply and must be fitted to an appropriate heat sink. Verify the completed external circuit for the intended load. Parallel supply connections increase leakage current. Confirm installation suitability with the supplier for this application. For the illustrated voltage-adding series connection, fit external blocking diodes as shown because the units do not contain reverse-blocking diodes. The external diode voltage rating must exceed V1 + V2. Follow the catalogue connection diagram and system insulation requirements. Cooling, Derating and Environment Cooling Free-air convection; fanless, half-encapsulated construction Working ambient temperature −40 to +70°C, subject to derating and mounting conditions Single-unit ambient load curve 100% load through 55°C; reduce to 60% at 70°C Additional heat-transfer plate 360 × 360 × 2 mm iron plate Operation with the specified iron plate 100% load from −40 to +70°C in the published installation Case-temperature curve 100% rated current up to 80°C at the marked tc point Working humidity 5–95% RH, non-condensing Storage temperature / humidity −40 to +85°C Temperature coefficient ±0.03%/°C over 0–55°C Operating altitude Up to 5000 m Altitude temperature derating Above 2000 m: reduce permitted ambient temperature by 3.5°C per additional 1000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting in accordance with IEC 61373 The ambient and case-temperature limits apply together. A permissible case temperature does not by itself waive the ambient-temperature load curve. To achieve the published full-load 70°C EN 50155 TX arrangement, firmly mount the converter centrally on the specified smooth, even iron plate with good thermal contact. Follow the illustrated orientation and mounting method. The half-encapsulated construction supports the installation orientations shown in the catalogue with the corresponding common derating curve. Safety, Isolation and EMC Catalogue-listed safety approvals UL 62368-1; IEC 62368-1; AS/NZS 62368-1; EAC TP TC 004 Additional safety design reference BS EN / EN 62368-1 Railway requirements BS EN / EN 50155 and IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance 100 MΩ between input–output, input–FG and output–FG at 500 VDC, 25°C and 70% RH Conducted emission BS EN / EN 55032 (CISPR 32), Class A Radiated emission BS EN / EN 55032 (CISPR 32), Class B EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035; light-industry level; EAC TP TC 020 Additional EMC conformity EAC TP TC 020 Confirm compliance of the completed installation with the applicable EMC and safety requirements. Component test results do not certify the entire vehicle or equipment. The component EMC tests use a 360 × 360 × 1 mm metal plate. This EMC test plate is distinct from the 360 × 360 × 2 mm iron plate specified for full-load 70°C thermal operation. Railway Environmental and Fire Test References The catalogue reports PASS for EN 50155 dry heat (section 13.4.5: 70°C for 6 hours and 85°C for 10 minutes); cyclic damp heat (13.4.8: 25–55°C, 90–100% RH, 48 hours); vibration (13.4.10: 19°C, 65% RH, 10 minutes); shock (13.4.10: 21 ±3°C, 65 ±5% RH, 30 ms ×18); low-temperature storage (13.4.6: −40°C, 16 hours); and salt mist (13.4.13: 35 ±2°C, 96 hours). These are test conditions, not expanded continuous operating limits. EN 45545-2:2020 fire-test references cover PCB R22 oxygen index (EN ISO 4589-2:2017), smoke density (EN ISO 5659-2:2017) and smoke toxicity (EN 17084:2018); PCB R24 oxygen index; PCB R25 glow-wire (EN 60695-2-11:2014); potting R24 oxygen index; and terminal-block R26 vertical flame (EN 60695-11-10:2013). HL1 and HL2 are marked PASS for every listed item. HL3 is marked PASS for the listed items except PCB R22 smoke density, for which no PASS result is listed. Mechanical Data and Installation Items Catalogue body dimensions, L × W × H 216 × 96.5 × 40 mm Case reference 205 Drawing tolerance ±1 mm Mounting layout 208 mm longitudinal reference; 4 × R2.1 mounting slots and the marked 2 × R2.1 side features Iron-plate fixing arrangement Four M4 screws at the illustrated positions Case-temperature measurement point Marked tc in the mechanical drawing Unit mass, catalogue PACKING reference 1190 g Catalogue packing 1.19 kg; 12 units / 15.3 kg / 0.97 CUFT Minimum MTBF 1850.1K hours, Telcordia SR-332 (Bellcore); 130.8K hours, MIL-HDBK-217F at 25°C Nominal switching frequency 130 kHz Catalogue warranty 3 years Capacitor specification 105°C long-life electrolytic capacitors Production test 100% full-load burn-in test The RSD-300 drawing separately shows terminal projections of up to 15 mm at each end. Allow these projections and the required wire-bend clearance beyond the body outline. The iron plate, fixings and any external connection components must be selected for the installation. Confirm supplied items with the order; the catalogue plate drawing does not establish that a separate plate kit is included. The mass is the explicit catalogue packing reference per unit, not a measured net mass or the weight of a complete shipping package.

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  MEAN WELL RSD-300 series: Railway DC/DC Converter - RSD-300B-5

  The MEAN WELL RSD-300B-5 is a fanless railway DC/DC converter with a 5 V output rated at 42 A and 210 W. Its B-code input supports continuous operation from 16.8–31.2 VDC and a separate 1-second input range of 14.4–33.6 VDC. The half-encapsulated enclosure provides 4 kVDC input-to-output isolation; available load depends on ambient temperature and the mounting heat-transfer arrangement. Product Datasheet Download MEAN WELL RSD-300 Datasheet (PDF) The RSD-300 section is on PDF pages 42, 43, 44, 45, 46, 47, 48, 49, 50, 51. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-300B-5 Series RSD-300 Input version B; nominal test input 24 VDC DC output voltage 5 V Rated output current 42 A Rated output power 210 W Output current range 0–42 A Output voltage adjustment Optional by request; not included in the standard product Maximum ripple and noise 100 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Use the voltage, current and actual rated power together when selecting the load. The family wattage designation does not replace the rating of this output and input version. The standard RSD-300 output is not user-adjustable. Request the optional voltage-adjustment configuration from the manufacturer when required. Input, Timing and Measurement Conditions Continuous DC input range 16.8–31.2 VDC 1-second input range 14.4–33.6 VDC Typical efficiency 89% Typical DC input current 9.7 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Normal measurement conditions 24 VDC input, rated load and 25°C ambient Supply interruption classification EN 50155:2021, S1 The 1-second range is a transient operating condition, not an extension of the continuous input rating. Keep the input within the continuous range for sustained use. Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. The manufacturer strongly recommends keeping external output capacitance at or below 5000 µF for this output-voltage version. The catalogue supplies a dedicated RSD-300B-5 hold-up-versus-load curve. Hold-up duration increases as the load is reduced; use that model-specific curve for interruption sizing rather than a single duration for every load. Protection and Input Safeguards Protection functions Short circuit, overload, overvoltage, overtemperature and input reverse polarity Overload threshold 105–135% of rated output power Overload response Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 5.75–7 V Overvoltage recovery Output shutdown; reapply input power to recover Overtemperature recovery Output shutdown; automatic recovery after cooling Input reverse polarity A MOSFET in series with the negative input opens and prevents output when polarity is reversed Internal input fuse reference Littelfuse 257; fast; 30 A, 32 V Inrush limiting Start-up resistor bypassed by a MOSFET after start-up Do not operate continuously in the overload region: overheating can reduce service life or damage the converter. The internal fuse reference describes the installed protection component; it is not an external fuse-selection instruction. When input voltage falls below the undervoltage operating threshold, the controller stops the output. The output resumes automatically after the input rises sufficiently, provided no latched protection remains active. Power Terminals and Indicator Input 1 DC INPUT V+ Input 2 DC INPUT V− Input 3 FG Output 1, 2 DC OUTPUT −V Output 3, 4 DC OUTPUT +V LED status Green: normal operation; unlit: no power or a failure Connect the DC source and load with the polarities shown and connect FG to the installation protective-earth system. Size conductors and terminations for the current of this model. Use the mechanical drawing to identify the physical terminal positions. Leave space for terminal access and cable bends; the body dimensions do not include the full installed wiring envelope. Series Operation and Redundant Supply Connections Parallel current sharing No built-in parallel circuit; a parallel arrangement does not increase the converter current rating Redundant supply arrangement External positive-output isolation diode for each supply, with suitable heat sinking Series output arrangement Positive/negative rails or added output voltage; current rating does not increase For the illustrated redundant connection, each isolation diode must have a current rating greater than the maximum output current rating of its supply and must be fitted to an appropriate heat sink. Verify the completed external circuit for the intended load. Parallel supply connections increase leakage current. Confirm installation suitability with the supplier for this application. For the illustrated voltage-adding series connection, fit external blocking diodes as shown because the units do not contain reverse-blocking diodes. The external diode voltage rating must exceed V1 + V2. Follow the catalogue connection diagram and system insulation requirements. Cooling, Derating and Environment Cooling Free-air convection; fanless, half-encapsulated construction Working ambient temperature −40 to +70°C, subject to derating and mounting conditions Single-unit ambient load curve 100% load through 55°C; reduce to 60% at 70°C Additional heat-transfer plate 360 × 360 × 2 mm iron plate Operation with the specified iron plate 100% load from −40 to +70°C in the published installation Case-temperature curve 100% rated current up to 80°C at the marked tc point Working humidity 5–95% RH, non-condensing Storage temperature / humidity −40 to +85°C Temperature coefficient ±0.03%/°C over 0–55°C Operating altitude Up to 5000 m Altitude temperature derating Above 2000 m: reduce permitted ambient temperature by 3.5°C per additional 1000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting in accordance with IEC 61373 The ambient and case-temperature limits apply together. A permissible case temperature does not by itself waive the ambient-temperature load curve. To achieve the published full-load 70°C EN 50155 TX arrangement, firmly mount the converter centrally on the specified smooth, even iron plate with good thermal contact. Follow the illustrated orientation and mounting method. The half-encapsulated construction supports the installation orientations shown in the catalogue with the corresponding common derating curve. Safety, Isolation and EMC Catalogue-listed safety approvals UL 62368-1; IEC 62368-1; AS/NZS 62368-1; EAC TP TC 004 Additional safety design reference BS EN / EN 62368-1 Railway requirements BS EN / EN 50155 and IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance 100 MΩ between input–output, input–FG and output–FG at 500 VDC, 25°C and 70% RH Conducted emission BS EN / EN 55032 (CISPR 32), Class A Radiated emission BS EN / EN 55032 (CISPR 32), Class B EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035; light-industry level; EAC TP TC 020 Additional EMC conformity EAC TP TC 020 Confirm compliance of the completed installation with the applicable EMC and safety requirements. Component test results do not certify the entire vehicle or equipment. The component EMC tests use a 360 × 360 × 1 mm metal plate. This EMC test plate is distinct from the 360 × 360 × 2 mm iron plate specified for full-load 70°C thermal operation. Railway Environmental and Fire Test References The catalogue reports PASS for EN 50155 dry heat (section 13.4.5: 70°C for 6 hours and 85°C for 10 minutes); cyclic damp heat (13.4.8: 25–55°C, 90–100% RH, 48 hours); vibration (13.4.10: 19°C, 65% RH, 10 minutes); shock (13.4.10: 21 ±3°C, 65 ±5% RH, 30 ms ×18); low-temperature storage (13.4.6: −40°C, 16 hours); and salt mist (13.4.13: 35 ±2°C, 96 hours). These are test conditions, not expanded continuous operating limits. EN 45545-2:2020 fire-test references cover PCB R22 oxygen index (EN ISO 4589-2:2017), smoke density (EN ISO 5659-2:2017) and smoke toxicity (EN 17084:2018); PCB R24 oxygen index; PCB R25 glow-wire (EN 60695-2-11:2014); potting R24 oxygen index; and terminal-block R26 vertical flame (EN 60695-11-10:2013). HL1 and HL2 are marked PASS for every listed item. HL3 is marked PASS for the listed items except PCB R22 smoke density, for which no PASS result is listed. Mechanical Data and Installation Items Catalogue body dimensions, L × W × H 216 × 96.5 × 40 mm Case reference 205 Drawing tolerance ±1 mm Mounting layout 208 mm longitudinal reference; 4 × R2.1 mounting slots and the marked 2 × R2.1 side features Iron-plate fixing arrangement Four M4 screws at the illustrated positions Case-temperature measurement point Marked tc in the mechanical drawing Unit mass, catalogue PACKING reference 1190 g Catalogue packing 1.19 kg; 12 units / 15.3 kg / 0.97 CUFT Minimum MTBF 1850.1K hours, Telcordia SR-332 (Bellcore); 130.8K hours, MIL-HDBK-217F at 25°C Nominal switching frequency 130 kHz Catalogue warranty 3 years Capacitor specification 105°C long-life electrolytic capacitors Production test 100% full-load burn-in test The RSD-300 drawing separately shows terminal projections of up to 15 mm at each end. Allow these projections and the required wire-bend clearance beyond the body outline. The iron plate, fixings and any external connection components must be selected for the installation. Confirm supplied items with the order; the catalogue plate drawing does not establish that a separate plate kit is included. The mass is the explicit catalogue packing reference per unit, not a measured net mass or the weight of a complete shipping package.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200D-48

  The MEAN WELL RSD-200D-48 is a railway single-output DC/DC converter delivering 48 V at up to 4.2 A (201.6 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200D-48 Series RSD-200 Input version D: 110 VDC nominal test input Output code 48: 48 VDC nominal output DC output voltage 48 V Rated output current 4.2 A Rated output power 201.6 W Output current range 0–4.2 A Maximum ripple and noise 180 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 91% Typical DC input current 2.1 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 55.2–64.8 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 5 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 4.2 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200D-24

  The MEAN WELL RSD-200D-24 is a railway single-output DC/DC converter delivering 24 V at up to 8.4 A (201.6 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200D-24 Series RSD-200 Input version D: 110 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 8.4 A Rated output power 201.6 W Output current range 0–8.4 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 91% Typical DC input current 2.1 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 5 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 8.4 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200D-12

  The MEAN WELL RSD-200D-12 is a railway single-output DC/DC converter delivering 12 V at up to 16.7 A (200.4 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200D-12 Series RSD-200 Input version D: 110 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 16.7 A Rated output power 200.4 W Output current range 0–16.7 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 91% Typical DC input current 2.1 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 5 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 16.7 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200C-48

  The MEAN WELL RSD-200C-48 is a railway single-output DC/DC converter delivering 48 V at up to 4.2 A (201.6 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200C-48 Series RSD-200 Input version C: 48 VDC nominal test input Output code 48: 48 VDC nominal output DC output voltage 48 V Rated output current 4.2 A Rated output power 201.6 W Output current range 0–4.2 A Maximum ripple and noise 180 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 91% Typical DC input current 4.8 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 55.2–64.8 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 4.2 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200C-24

  The MEAN WELL RSD-200C-24 is a railway single-output DC/DC converter delivering 24 V at up to 8.4 A (201.6 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200C-24 Series RSD-200 Input version C: 48 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 8.4 A Rated output power 201.6 W Output current range 0–8.4 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 91% Typical DC input current 4.8 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 8.4 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200C-12

  The MEAN WELL RSD-200C-12 is a railway single-output DC/DC converter delivering 12 V at up to 16.7 A (200.4 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200C-12 Series RSD-200 Input version C: 48 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 16.7 A Rated output power 200.4 W Output current range 0–16.7 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 91% Typical DC input current 4.8 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 16.7 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200B-48

  The MEAN WELL RSD-200B-48 is a railway single-output DC/DC converter delivering 48 V at up to 4.2 A (201.6 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200B-48 Series RSD-200 Input version B: 24 VDC nominal test input Output code 48: 48 VDC nominal output DC output voltage 48 V Rated output current 4.2 A Rated output power 201.6 W Output current range 0–4.2 A Maximum ripple and noise 180 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 89% Typical DC input current 9.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 55.2–64.8 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 2 × Conquer UDA-A, 10 A / 250 V each; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 4.2 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200B-24

  The MEAN WELL RSD-200B-24 is a railway single-output DC/DC converter delivering 24 V at up to 8.4 A (201.6 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200B-24 Series RSD-200 Input version B: 24 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 8.4 A Rated output power 201.6 W Output current range 0–8.4 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 89% Typical DC input current 9.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 2 × Conquer UDA-A, 10 A / 250 V each; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 8.4 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-200 series: Railway Single-Output DC/DC Converter - RSD-200B-12

  The MEAN WELL RSD-200B-12 is a railway single-output DC/DC converter delivering 12 V at up to 16.7 A (200.4 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-200 Datasheet (PDF) The RSD-200 section is on PDF pages 35, 36, 37, 38, 39, 40, 41. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-200B-12 Series RSD-200 Input version B: 24 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 16.7 A Rated output power 200.4 W Output current range 0–16.7 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 89% Typical DC input current 9.6 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-200 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M4 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 40. Dimensions and Terminal Connections Body dimensions, L × W × H 191 × 86 × 40 mm Case number 203A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 72 mm Mounting-slot details 4 × R2.1 mounting slots; side drawing: 2 × R2.1 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 2 × Conquer UDA-A, 10 A / 250 V each; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 16.7 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 38–39. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 41 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 940 g Catalogue packing 0.94 kg; 12 units / 12.3 kg / 0.73 CUFT Minimum MTBF 2125.5K hours, Telcordia SR-332; 218.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150D-24

  The MEAN WELL RSD-150D-24 is a railway single-output DC/DC converter delivering 24 V at up to 6.3 A (151.2 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150D-24 Series RSD-150 Input version D: 110 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 6.3 A Rated output power 151.2 W Output current range 0–6.3 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 91% Typical DC input current 1.5 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 4 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 6.3 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150D-12

  The MEAN WELL RSD-150D-12 is a railway single-output DC/DC converter delivering 12 V at up to 12.5 A (150 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150D-12 Series RSD-150 Input version D: 110 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 12.5 A Rated output power 150 W Output current range 0–12.5 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 92% Typical DC input current 1.5 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 4 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 12.5 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150D-5

  The MEAN WELL RSD-150D-5 is a railway single-output DC/DC converter delivering 5 V at up to 30 A (150 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150D-5 Series RSD-150 Input version D: 110 VDC nominal test input Output code 5: 5 VDC nominal output DC output voltage 5 V Rated output current 30 A Rated output power 150 W Output current range 0–30 A Maximum ripple and noise 100 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 90% Typical DC input current 1.5 A at 110 VDC Typical inrush current 45 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 5.75–7 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 4 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 30 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150C-24

  The MEAN WELL RSD-150C-24 is a railway single-output DC/DC converter delivering 24 V at up to 6.3 A (151.2 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150C-24 Series RSD-150 Input version C: 48 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 6.3 A Rated output power 151.2 W Output current range 0–6.3 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 91% Typical DC input current 3.6 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 6.3 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150C-12

  The MEAN WELL RSD-150C-12 is a railway single-output DC/DC converter delivering 12 V at up to 12.5 A (150 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150C-12 Series RSD-150 Input version C: 48 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 12.5 A Rated output power 150 W Output current range 0–12.5 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.3% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 92% Typical DC input current 3.6 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 12.5 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150C-5

  The MEAN WELL RSD-150C-5 is a railway single-output DC/DC converter delivering 5 V at up to 30 A (150 W). This C input version accepts 33.6–62.4 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150C-5 Series RSD-150 Input version C: 48 VDC nominal test input Output code 5: 5 VDC nominal output DC output voltage 5 V Rated output current 30 A Rated output power 150 W Output current range 0–30 A Maximum ripple and noise 100 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 33.6–62.4 VDC Transient DC input range 28.8–67.2 VDC for 1 second Typical efficiency 90% Typical DC input current 3.6 A at 48 VDC Typical inrush current 45 A at 48 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 48 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 5.75–7 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 10 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 30 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150B-24

  The MEAN WELL RSD-150B-24 is a railway single-output DC/DC converter delivering 24 V at up to 6.3 A (151.2 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150B-24 Series RSD-150 Input version B: 24 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 6.3 A Rated output power 151.2 W Output current range 0–6.3 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 90% Typical DC input current 7.3 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 15 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 6.3 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150B-12

  The MEAN WELL RSD-150B-12 is a railway single-output DC/DC converter delivering 12 V at up to 12.5 A (150 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150B-12 Series RSD-150 Input version B: 24 VDC nominal test input Output code 12: 12 VDC nominal output DC output voltage 12 V Rated output current 12.5 A Rated output power 150 W Output current range 0–12.5 A Maximum ripple and noise 120 mVp-p Voltage tolerance ±2.0% Line regulation ±0.3% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 90% Typical DC input current 7.3 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 13.8–16.2 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 15 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 12.5 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-150 series: Railway Single-Output DC/DC Converter - RSD-150B-5

  The MEAN WELL RSD-150B-5 is a railway single-output DC/DC converter delivering 5 V at up to 30 A (150 W). This B input version accepts 16.8–31.2 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-150 Datasheet (PDF) The RSD-150 section is on PDF pages 28, 29, 30, 31, 32, 33, 34. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-150B-5 Series RSD-150 Input version B: 24 VDC nominal test input Output code 5: 5 VDC nominal output DC output voltage 5 V Rated output current 30 A Rated output power 150 W Output current range 0–30 A Maximum ripple and noise 100 mVp-p Voltage tolerance ±2.0% Line regulation ±0.5% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 16.8–31.2 VDC Transient DC input range 14.4–33.6 VDC for 1 second Typical efficiency 89% Typical DC input current 7.3 A at 24 VDC Typical inrush current 45 A at 24 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 24 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-150 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 5.75–7 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Overtemperature protection Output shutdown; automatic recovery after the temperature falls Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 80°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 33. Dimensions and Terminal Connections Body dimensions, L × W × H 189 × 77 × 36 mm Case number 978A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body Input end: 10 mm maximum; output end: 15 mm maximum Top mounting-slot centre spacing 183 × 63 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 15 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 30 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 31–32. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. The catalogue strongly recommends external output capacitance no greater than 5000 µF for this output-voltage version. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 34 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 800 g Catalogue packing 0.8 kg; 15 units / 13 kg / 0.75 CUFT Minimum MTBF 2405.1K hours, Telcordia SR-332; 223.3K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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  MEAN WELL RSD-100 series: Railway Single-Output DC/DC Converter - RSD-100D-24

  The MEAN WELL RSD-100D-24 is a railway single-output DC/DC converter delivering 24 V at up to 4.2 A (100.8 W). This D input version accepts 67.2–143 VDC continuously. Its half-encapsulated, fanless enclosure provides 4 kVDC input-to-output isolation. Select the load and mounting arrangement using the model-specific ratings and thermal limits below. Product Datasheet Download MEAN WELL RSD-100 Datasheet (PDF) The RSD-100 section is on PDF pages 21, 22, 23, 24, 25, 26, 27. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model RSD-100D-24 Series RSD-100 Input version D: 110 VDC nominal test input Output code 24: 24 VDC nominal output DC output voltage 24 V Rated output current 4.2 A Rated output power 100.8 W Output current range 0–4.2 A Maximum ripple and noise 150 mVp-p Voltage tolerance ±2.0% Line regulation ±0.2% Load regulation ±1.0% Output voltage adjustment Optional by arrangement with MEAN WELL; not fitted to the standard product Use the rated current and power of this full model when choosing the load. The family number is not the exact output power of every version. DC Input and Performance Continuous DC input range 67.2–143 VDC Transient DC input range 57.6–154 VDC for 1 second Typical efficiency 90% Typical DC input current 1.2 A at 110 VDC Typical inrush current 30 A at 110 VDC Set-up / rise time 800 / 50 ms at full load Supply-interruption classification EN 50155:2021, S1 Switching frequency 130 kHz, as shown in the block diagram The wider transient range applies for one second only. Continuous operation must stay within the stated continuous input range. Unless otherwise specified, ratings are measured at 110 VDC input, rated load and 25°C ambient. Typical efficiency and input current depend on the operating conditions. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation. Hold-up time depends on load. The RSD-100 catalogue provides hold-up curves for the B and C input versions; select any required ride-through performance from the applicable curve. Protection and Status Short-circuit protection Included Overload threshold 105–135% of rated output power Overload recovery Constant-current limiting; automatic recovery after the fault is removed Overvoltage threshold 27.6–32.4 V Overvoltage recovery Output shutdown; reapply input power to recover Input reverse-polarity protection A series MOSFET in the negative input opens if the input polarity is reversed Input undervoltage protection Output shutdown below the control threshold; automatic restart when input voltage recovers Power indicator Green LED: normal operation; no indication: no power or fault Do not operate continuously in the overload region. Inrush limiting uses a resistor during start-up and a MOSFET bypass after start-up. Cooling and Operating Conditions Cooling Fanless free-air convection; half-encapsulated construction Working temperature without an added thermal plate −40 to +55°C at full load; derate linearly to 60% load at +70°C Working temperature with the specified thermal plate −40 to +70°C at full load; follow the catalogue mounting arrangement Rated-current case-temperature limit 70°C at the marked tc point, as shown in the catalogue curve Working humidity 5–95% RH, non-condensing Storage temperature −40 to +85°C Temperature coefficient ±0.03%/°C from 0 to 50°C Operating altitude Up to 5000 m; reduce allowed ambient temperature by 3.5°C per 1000 m above 2000 m Vibration 10–500 Hz, 5 G; 10 minutes per cycle, 60 minutes on each X, Y and Z axis; mounting compliance to IEC 61373 For full-load operation at +70°C and the specified TX thermal condition, mount the unit firmly at the centre of an even, smooth iron plate measuring 360 × 360 × 1.2 mm. This is a thermal installation component, not an included accessory claim. The catalogue mounting illustration specifies four M3 fasteners. Use the mechanical drawing and maintain a clear convection path. The plate arrangement is shown on PDF page 26. Dimensions and Terminal Connections Body dimensions, L × W × H 161 × 68 × 36 mm Case number 999A Mechanical-drawing tolerance ±1 mm Terminal projection beyond the body 12 mm maximum at each end Top mounting-slot centre spacing 156 × 55 mm Mounting-slot details 4 × R1.75 mounting slots; side drawing: 2 × R1.75 Input terminals Pin 1: DC V+; pin 2: DC V−; pin 3: FG Output terminals Pin 1: DC V−; pin 2: DC V+ Connect frame ground and observe the numbered terminal polarities. Allow room beyond the stated body size for the terminal projections, wiring and access. Check the full mechanical drawing before preparing the mounting plate. Installation Parts and Connection Options Internal input fuse reference 1 × Conquer UDA-A, 3.15 A / 250 V; time-lag type Thermal mounting plate 360 × 360 × 1.2 mm iron plate; centre mounting on a smooth, even surface Standard parallel capability No built-in current-sharing circuit Redundant operation Requires an external diode at each positive output; diode current rating must exceed 4.2 A and have suitable heat dissipation Series operation Catalogue circuits support positive/negative rails or increased voltage; output current does not increase The Conquer UDA-A entry identifies the internal fuse shown in the catalogue; it is not a separately included MEAN WELL accessory. The catalogue does not give dedicated ordering codes for the plate or external connection diodes. Use the connection diagrams on PDF pages 24–25. External diode isolation is for redundancy, not for increasing output-current capacity. Check combined leakage current and circuit suitability with the equipment supplier. For a series connection that adds the output voltages, the catalogue requires external blocking diodes because the converter has no internal reverse-blocking diode. Their voltage rating must exceed the combined output voltage. Isolation, Safety and Railway Standards Withstand voltage Input–output: 4 kVDC; input–FG: 2.5 kVDC; output–FG: 2.5 kVDC Isolation resistance Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Catalogue-listed safety approvals IEC 62368-1; UL 62368-1; AS/NZS 62368-1; EAC TP TC 004 Safety design reference BS EN / EN 62368-1 EMC emission BS EN / EN 55032 (CISPR 32): conducted Class A, radiated Class B; EAC TP TC 020 EMC immunity BS EN / EN 61000-4-2/-3/-4/-5/-6/-8; BS EN / EN 55035, light-industry level; EAC TP TC 020 Railway references BS EN / EN 50155; IEC 60571; IEC 61373 shock and vibration; BS EN / EN 50121-3-2 EMC; BS EN / EN 45545-2 fire protection The supply is a component for installation in final equipment. Catalogue EMC tests used a 360 × 360 mm metal plate, 1 mm thick; check the finished equipment against its applicable EMC requirements. This EMC test plate and the 1.2 mm thermal plate serve different purposes. PDF page 27 lists environmental test conditions and material-specific EN 45545-2 fire-test results. These component test results do not replace validation of the complete installation. Mass and Catalogue References Mass, catalogue PACKING reference per unit 563 g Catalogue packing 0.563 kg; 24 units / 14.5 kg / 0.9 CUFT Minimum MTBF 2446.2K hours, Telcordia SR-332; 254.2K hours, MIL-HDBK-217F at 25°C Electrolytic capacitors 105°C long-life type, as listed in the catalogue Catalogue burn-in test 100% full load Catalogue warranty 3 years The mass is the single-unit reference in the catalogue PACKING field, rather than a measured shipping weight.

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