MEAN WELL UMP-400 series: Fanless Configurable AC/DC Power Supply - UMP-400-48

Description

MEAN WELL UMP-400-48 is a fanless configurable AC/DC power supply with a standard 48 V main output rated at up to 8.3 A and 400 W maximum, subject to input-voltage and temperature limits. This model without module-selection suffixes is the single-output main unit. Separately selected NID modules can create a configuration with up to four outputs; they are not implied by this standard model code.

Product Datasheet

Download MEAN WELL UMP-400 Datasheet (PDF)

The UMP-400 section is on PDF pages 1, 2, 3, 4, 5, 6. Refer to the complete mechanical drawings and notes when planning installation.

Model and Main DC Output

Standard configuration UMP-400-48; single 48 V main output, with no optional module-selection suffix.
Rated output voltage 48 V DC.
Rated output current 8.3 A; operating range 0–8.3 A. No minimum load is required.
Rated output power 400 W maximum; observe both the input-voltage and thermal derating curves.
Voltage adjustment 45.6–50.4 V DC.
Ripple and noise 360 mVp-p maximum, under the measurement conditions below.
Output accuracy Voltage tolerance ±1.0%; line regulation ±0.5%; load regulation ±1.0%.
Set-up / rise / hold-up 230 VAC: 1000 / 50 ms set-up/rise; 115 VAC: 2000 / 50 ms. Typical hold-up: 12 ms at either input voltage.

The UMP-400 front end operates as a complete single-output supply. Optional NID modules can add CH2, CH3 and CH4 for up to four outputs in total. The sum of all channel loads must remain within the available combined output power; the multiple-output curves have lower limits than the standard single-output curves.

Unless otherwise stated, specification measurements use 230 VAC input, rated load and 25°C ambient. Ripple is measured over 20 MHz using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel. Voltage tolerance includes initial setting, line regulation and load regulation.

Input, Efficiency and Protection

Input range 90–264 VAC or 127–370 VDC; AC frequency 47–63 Hz.
Power factor >0.95 at 230 VAC and >0.98 at 115 VAC, at full load.
Efficiency, typical 88.5% at nominal voltage with the case fully loaded using the module combinations specified by the catalogue. Efficiency varies with the selected modules.
Input current / inrush AC current: 2.5 A at 230 VAC or 4.7 A at 115 VAC. Inrush: 40 A at 230 VAC or 25 A at 115 VAC.
Leakage / touch current Earth leakage <300 µA and touch current <100 µA, at 264 VAC.
Overload / short circuit 105–135% of rated output power. CH1 uses constant-current limiting; a prolonged short circuit triggers overtemperature protection. Optional CH2–CH4 use hiccup protection.
Overvoltage 52.8–62.4 V on the main output; output shuts down and requires re-powering to recover.
Overtemperature Output shuts down; re-power to recover.

The main-unit block diagram specifies PFC operation at 65 kHz and PWM operation at 85 kHz; the optional NID35/65/100 output-module diagram specifies 250 kHz. An LED provides a power-on indication.

Cooling and Available Output Power

Cooling / orientation Fanless operation; the published load curves use horizontal installation.
Without a cooling plate: single output At 230 VAC, 400 W from −30 to +50°C, then 300 W at +60°C and 240 W at +70°C. At 115 VAC, 360 W from −30 to +40°C, falling to 120 W at +70°C.
Without a cooling plate: multiple outputs Combined load at 230 VAC: 390 W from −30 to +40°C, 300 W at +50°C, 240 W at +60°C and 120 W at +70°C. At 115 VAC: 350 W from −30 to +40°C, falling to 80 W at +70°C.
With the specified plate: single output With a 450 × 450 × 3 mm aluminum cooling plate, 230 VAC permits 400 W from −30 to +60°C, 300 W at +70°C and 240 W at +80°C. At 115 VAC: 360 W from −30 to +50°C, falling to 120 W at +80°C.
With the specified plate: multiple outputs Combined load with that plate at 230 VAC: 390 W from −30 to +50°C, 300 W at +60°C, 240 W at +70°C and 120 W at +80°C. At 115 VAC: 350 W from −30 to +50°C, falling to 80 W at +80°C.
AC input derating, single output The 60 Hz curve shows 300 W at 90 VAC, rising to 360 W at 115 VAC; 360 W applies from 115 VAC to below 180 VAC, and 400 W from 180 to 264 VAC.
AC input derating, multiple outputs The 60 Hz curve shows 290 W at 90 VAC, rising to 350 W at 115 VAC; combined load is limited to 350 W below 180 VAC and 390 W from 180 to 264 VAC.

Apply the lowest limit imposed by the input, ambient temperature, installation and individual channel ratings. Use the complete plotted curves for intermediate conditions. The general working-temperature specification is −30 to +70°C; the +80°C points belong specifically to the cooling-plate installation curves. The plate dimensions describe the required cooling arrangement, not an included accessory or an ordering code.

Optional Output Modules

Module selection CH2, CH3 and CH4 accept separately selected NID35, NID65 or NID100 non-isolated DC/DC modules, within the options applicable to this main-unit voltage.
Combined load All channels together must stay below 400 W and within the lower multiple-output limits for the actual input and cooling conditions.

NID35 positive-output choices: code A — NID35-05, +5 V / 3.5 A; code B — NID35-12, +12 V / 2.9 A; code C — NID35-15, +15 V / 2.4 A; code D — NID35-24, +24 V / 1.5 A. These are module selection entries, subject to the combined load limits.

NID65 positive-output choices: code E — NID65-05, +5 V / 6.5 A; code F — NID65-12, +12 V / 4.9 A; code G — NID65-15, +15 V / 4.3 A; code H — NID65-24, +24 V / 2.7 A. These are module selection entries, subject to the combined load limits.

NID100 positive-output choices: code I — NID100-05, +5 V / 8.0 A; code J — NID100-12, +12 V / 6.0 A; code K — NID100-15, +15 V / 5.2 A; code L — NID100-24, +24 V / 3.4 A. These are module selection entries, subject to the combined load limits.

The 24 V module choices NID35-24, NID65-24 and NID100-24 are available with this 48 V main unit. The catalogue restricts negative-output configurations to UMP-400-24; this 48 V model is not listed for that option.

A configured unit adds one selection code for each of CH2, CH3 and CH4 after the main-unit voltage code. NID modules can be purchased separately. Select the required modules and finished configuration when ordering; the standard model identified here does not specify an installed three-module set. The NID converters are non-isolated DC/DC modules, so their outputs must not be treated as mutually isolated supplies.

Terminals, Dimensions and Installation

AC terminal block TB1 Pin 1: AC/L; pin 2: AC/N; pin 3: FG. Connect protective earth to FG.
Main-output terminal block TB3 Pin 1: COM; pin 2: +V1 (48 V main output).
Optional terminal block TB2 Installed only for multiple-output configurations. Pin 3: COM; 4: +V2; 5: COM; 6: +V3. For a positive CH4, pin 7: COM and pin 8: +V4.
Terminal screws TB1, TB2 and TB3: M3; maximum tightening torque 14 kgf·cm.
Dimensions / reference mass 250 × 89 × 37 mm (L × W × H), case 274; low-profile 1U design. Catalogue single-unit packing reference: 0.88 kg (880 g).

For this 48 V main unit, select the positive-output module configuration. The catalogue's negative-CH4 wiring option is restricted to the UMP-400-24 main unit.

Install with the top side up and provide at least 5 cm clearance around and above the unit, as shown on PDF page 6. Follow the case-274 mounting drawing on page 5, including its M3 fixing detail and the indicated 2 mm dimension. The general drawing tolerance is ±1 mm. Match mounting hardware to that drawing and the installation structure.

Environment, Safety and EMC

Environment Working: −30 to +70°C, with derating; 20–90% RH, non-condensing. Storage: −40 to +85°C. Temperature coefficient: ±0.03%/°C over 0–50°C.
Altitude / overvoltage category Operating altitude up to 5000 m, OVC II. OVC III under IEC62368-1 is specified up to 2000 m. Above 2000 m, reduce the allowable ambient temperature by 3.5°C per 1000 m for this fanless supply.
Vibration 10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis.
Catalogue safety approvals EAC TP TC 004, UL62368-1 and Dekra BS EN/EN62368-1, as listed in the supplied catalogue.
Medical design references Design references: ANSI/AAMI ES60601-1, TUV BS EN/EN60601-1 and IEC60601-1, 3rd edition. Isolation is specified as 2 × MOPP from primary to secondary and 1 × MOPP from primary to earth.
Dielectric / insulation Withstand voltage: input–output 4 kVAC; input–FG 2 kVAC; output–FG 1.5 kVAC. Insulation resistance for those paths: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emissions Conducted and radiated Class B under BS EN/EN55032 (CISPR32); design reference BS EN/EN55011 (CISPR11). Harmonics: BS EN/EN61000-3-2 Class A. Flicker: BS EN/EN61000-3-3.

Immunity is listed under BS EN/EN55035, with BS EN/EN60601-1-2 as a design reference. The catalogue test values are ESD 8 kV air / 4 kV contact (EN61000-4-2), radiated RF 3 V/m (EN61000-4-3), EFT 1 kV (EN61000-4-4), surge 2 kV line–FG / 1 kV line–line (EN61000-4-5), conducted RF 3 V (EN61000-4-6) and magnetic field 1 A/m (EN61000-4-8). EN61000-4-11 entries are a 100% dip for 1 period, a 30% dip for 25 periods and a 100% interruption for 250 periods.

This is a power-supply component for installation in equipment. Its isolation specifications and medical design references do not certify the complete medical system. The equipment manufacturer must confirm compliance of the final assembly. Catalogue EMC testing used a 450 × 450 × 3 mm metal plate.

Typical applications include test and measurement equipment, telecommunications, industrial control and automation, mechanical/electrical equipment, and diagnostic or biological equipment subject to the final system's applicable safety requirements.

Reliability and Catalogue Conditions

MTBF reference 1428.4 khr minimum under Telcordia SR-332 (Bellcore); 187.3 khr minimum under MIL-HDBK-217F at 25°C.
Warranty The catalogue lists a 3-year warranty.
Document version UMP-400 series specification dated 2024-11-22.

MEAN WELL UMP-400 series: Fanless Configurable AC/DC Power Supply - UMP-400-48

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MEAN WELL UMP-400-48 is a fanless configurable AC/DC power supply with a standard 48 V main output rated at up... Read more

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    Description

    MEAN WELL UMP-400-48 is a fanless configurable AC/DC power supply with a standard 48 V main output rated at up to 8.3 A and 400 W maximum, subject to input-voltage and temperature limits. This model without module-selection suffixes is the single-output main unit. Separately selected NID modules can create a configuration with up to four outputs; they are not implied by this standard model code.

    Product Datasheet

    Download MEAN WELL UMP-400 Datasheet (PDF)

    The UMP-400 section is on PDF pages 1, 2, 3, 4, 5, 6. Refer to the complete mechanical drawings and notes when planning installation.

    Model and Main DC Output

    Standard configuration UMP-400-48; single 48 V main output, with no optional module-selection suffix.
    Rated output voltage 48 V DC.
    Rated output current 8.3 A; operating range 0–8.3 A. No minimum load is required.
    Rated output power 400 W maximum; observe both the input-voltage and thermal derating curves.
    Voltage adjustment 45.6–50.4 V DC.
    Ripple and noise 360 mVp-p maximum, under the measurement conditions below.
    Output accuracy Voltage tolerance ±1.0%; line regulation ±0.5%; load regulation ±1.0%.
    Set-up / rise / hold-up 230 VAC: 1000 / 50 ms set-up/rise; 115 VAC: 2000 / 50 ms. Typical hold-up: 12 ms at either input voltage.

    The UMP-400 front end operates as a complete single-output supply. Optional NID modules can add CH2, CH3 and CH4 for up to four outputs in total. The sum of all channel loads must remain within the available combined output power; the multiple-output curves have lower limits than the standard single-output curves.

    Unless otherwise stated, specification measurements use 230 VAC input, rated load and 25°C ambient. Ripple is measured over 20 MHz using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel. Voltage tolerance includes initial setting, line regulation and load regulation.

    Input, Efficiency and Protection

    Input range 90–264 VAC or 127–370 VDC; AC frequency 47–63 Hz.
    Power factor >0.95 at 230 VAC and >0.98 at 115 VAC, at full load.
    Efficiency, typical 88.5% at nominal voltage with the case fully loaded using the module combinations specified by the catalogue. Efficiency varies with the selected modules.
    Input current / inrush AC current: 2.5 A at 230 VAC or 4.7 A at 115 VAC. Inrush: 40 A at 230 VAC or 25 A at 115 VAC.
    Leakage / touch current Earth leakage <300 µA and touch current <100 µA, at 264 VAC.
    Overload / short circuit 105–135% of rated output power. CH1 uses constant-current limiting; a prolonged short circuit triggers overtemperature protection. Optional CH2–CH4 use hiccup protection.
    Overvoltage 52.8–62.4 V on the main output; output shuts down and requires re-powering to recover.
    Overtemperature Output shuts down; re-power to recover.

    The main-unit block diagram specifies PFC operation at 65 kHz and PWM operation at 85 kHz; the optional NID35/65/100 output-module diagram specifies 250 kHz. An LED provides a power-on indication.

    Cooling and Available Output Power

    Cooling / orientation Fanless operation; the published load curves use horizontal installation.
    Without a cooling plate: single output At 230 VAC, 400 W from −30 to +50°C, then 300 W at +60°C and 240 W at +70°C. At 115 VAC, 360 W from −30 to +40°C, falling to 120 W at +70°C.
    Without a cooling plate: multiple outputs Combined load at 230 VAC: 390 W from −30 to +40°C, 300 W at +50°C, 240 W at +60°C and 120 W at +70°C. At 115 VAC: 350 W from −30 to +40°C, falling to 80 W at +70°C.
    With the specified plate: single output With a 450 × 450 × 3 mm aluminum cooling plate, 230 VAC permits 400 W from −30 to +60°C, 300 W at +70°C and 240 W at +80°C. At 115 VAC: 360 W from −30 to +50°C, falling to 120 W at +80°C.
    With the specified plate: multiple outputs Combined load with that plate at 230 VAC: 390 W from −30 to +50°C, 300 W at +60°C, 240 W at +70°C and 120 W at +80°C. At 115 VAC: 350 W from −30 to +50°C, falling to 80 W at +80°C.
    AC input derating, single output The 60 Hz curve shows 300 W at 90 VAC, rising to 360 W at 115 VAC; 360 W applies from 115 VAC to below 180 VAC, and 400 W from 180 to 264 VAC.
    AC input derating, multiple outputs The 60 Hz curve shows 290 W at 90 VAC, rising to 350 W at 115 VAC; combined load is limited to 350 W below 180 VAC and 390 W from 180 to 264 VAC.

    Apply the lowest limit imposed by the input, ambient temperature, installation and individual channel ratings. Use the complete plotted curves for intermediate conditions. The general working-temperature specification is −30 to +70°C; the +80°C points belong specifically to the cooling-plate installation curves. The plate dimensions describe the required cooling arrangement, not an included accessory or an ordering code.

    Optional Output Modules

    Module selection CH2, CH3 and CH4 accept separately selected NID35, NID65 or NID100 non-isolated DC/DC modules, within the options applicable to this main-unit voltage.
    Combined load All channels together must stay below 400 W and within the lower multiple-output limits for the actual input and cooling conditions.

    NID35 positive-output choices: code A — NID35-05, +5 V / 3.5 A; code B — NID35-12, +12 V / 2.9 A; code C — NID35-15, +15 V / 2.4 A; code D — NID35-24, +24 V / 1.5 A. These are module selection entries, subject to the combined load limits.

    NID65 positive-output choices: code E — NID65-05, +5 V / 6.5 A; code F — NID65-12, +12 V / 4.9 A; code G — NID65-15, +15 V / 4.3 A; code H — NID65-24, +24 V / 2.7 A. These are module selection entries, subject to the combined load limits.

    NID100 positive-output choices: code I — NID100-05, +5 V / 8.0 A; code J — NID100-12, +12 V / 6.0 A; code K — NID100-15, +15 V / 5.2 A; code L — NID100-24, +24 V / 3.4 A. These are module selection entries, subject to the combined load limits.

    The 24 V module choices NID35-24, NID65-24 and NID100-24 are available with this 48 V main unit. The catalogue restricts negative-output configurations to UMP-400-24; this 48 V model is not listed for that option.

    A configured unit adds one selection code for each of CH2, CH3 and CH4 after the main-unit voltage code. NID modules can be purchased separately. Select the required modules and finished configuration when ordering; the standard model identified here does not specify an installed three-module set. The NID converters are non-isolated DC/DC modules, so their outputs must not be treated as mutually isolated supplies.

    Terminals, Dimensions and Installation

    AC terminal block TB1 Pin 1: AC/L; pin 2: AC/N; pin 3: FG. Connect protective earth to FG.
    Main-output terminal block TB3 Pin 1: COM; pin 2: +V1 (48 V main output).
    Optional terminal block TB2 Installed only for multiple-output configurations. Pin 3: COM; 4: +V2; 5: COM; 6: +V3. For a positive CH4, pin 7: COM and pin 8: +V4.
    Terminal screws TB1, TB2 and TB3: M3; maximum tightening torque 14 kgf·cm.
    Dimensions / reference mass 250 × 89 × 37 mm (L × W × H), case 274; low-profile 1U design. Catalogue single-unit packing reference: 0.88 kg (880 g).

    For this 48 V main unit, select the positive-output module configuration. The catalogue's negative-CH4 wiring option is restricted to the UMP-400-24 main unit.

    Install with the top side up and provide at least 5 cm clearance around and above the unit, as shown on PDF page 6. Follow the case-274 mounting drawing on page 5, including its M3 fixing detail and the indicated 2 mm dimension. The general drawing tolerance is ±1 mm. Match mounting hardware to that drawing and the installation structure.

    Environment, Safety and EMC

    Environment Working: −30 to +70°C, with derating; 20–90% RH, non-condensing. Storage: −40 to +85°C. Temperature coefficient: ±0.03%/°C over 0–50°C.
    Altitude / overvoltage category Operating altitude up to 5000 m, OVC II. OVC III under IEC62368-1 is specified up to 2000 m. Above 2000 m, reduce the allowable ambient temperature by 3.5°C per 1000 m for this fanless supply.
    Vibration 10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis.
    Catalogue safety approvals EAC TP TC 004, UL62368-1 and Dekra BS EN/EN62368-1, as listed in the supplied catalogue.
    Medical design references Design references: ANSI/AAMI ES60601-1, TUV BS EN/EN60601-1 and IEC60601-1, 3rd edition. Isolation is specified as 2 × MOPP from primary to secondary and 1 × MOPP from primary to earth.
    Dielectric / insulation Withstand voltage: input–output 4 kVAC; input–FG 2 kVAC; output–FG 1.5 kVAC. Insulation resistance for those paths: 100 MΩ at 500 VDC, 25°C and 70% RH.
    EMC emissions Conducted and radiated Class B under BS EN/EN55032 (CISPR32); design reference BS EN/EN55011 (CISPR11). Harmonics: BS EN/EN61000-3-2 Class A. Flicker: BS EN/EN61000-3-3.

    Immunity is listed under BS EN/EN55035, with BS EN/EN60601-1-2 as a design reference. The catalogue test values are ESD 8 kV air / 4 kV contact (EN61000-4-2), radiated RF 3 V/m (EN61000-4-3), EFT 1 kV (EN61000-4-4), surge 2 kV line–FG / 1 kV line–line (EN61000-4-5), conducted RF 3 V (EN61000-4-6) and magnetic field 1 A/m (EN61000-4-8). EN61000-4-11 entries are a 100% dip for 1 period, a 30% dip for 25 periods and a 100% interruption for 250 periods.

    This is a power-supply component for installation in equipment. Its isolation specifications and medical design references do not certify the complete medical system. The equipment manufacturer must confirm compliance of the final assembly. Catalogue EMC testing used a 450 × 450 × 3 mm metal plate.

    Typical applications include test and measurement equipment, telecommunications, industrial control and automation, mechanical/electrical equipment, and diagnostic or biological equipment subject to the final system's applicable safety requirements.

    Reliability and Catalogue Conditions

    MTBF reference 1428.4 khr minimum under Telcordia SR-332 (Bellcore); 187.3 khr minimum under MIL-HDBK-217F at 25°C.
    Warranty The catalogue lists a 3-year warranty.
    Document version UMP-400 series specification dated 2024-11-22.

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