Name: MEAN WELL MSP-1600 series: AC/DC enclosed power supply - MSP-1600-12
Brand: MEAN WELL
SKU: MSP-1600-12
Price: 828.0 USD
Availability: InStock

MEAN WELL MSP-1600 series: AC/DC enclosed power supply - MSP-1600-12

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Description

MSP-1600-12 — AC/DC enclosed power supply

The MEAN WELL MSP-1600-12 supplies 12 V DC at up to 125 A, with 1500 W rated output. It combines active PFC, CANBus control, external voltage programming and remote sensing in a fan-cooled enclosure. Its low-leakage insulation design supports integration into industrial, household and BF medical equipment, subject to the applicable system requirements and operating limits.

Download MEAN WELL MSP-1600 Datasheet (PDF)
Download MEAN WELL MSP-1600 User Manual (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

MSP-1600 datasheet: PDF pages 1–9, edition 2026-01-27. Match the supplied hardware to the applicable drawing and manual revision.

Model and output specifications

Model and construction	MSP-1600-12; MSP-1600 series enclosed AC/DC power supply with active PFC, built-in CANBus, temperature-controlled fans and conformal-coated internal PCB.
Rated output	12 V DC; 125 A rated current; 0–125 A current range; 1500 W rated power. Apply input-voltage, ambient-temperature and programmed-voltage limits together.
Built-in voltage adjustment	11.5–14 V DC via the built-in potentiometer. External PV programming is a separate function with its own current limits.
Ripple and noise	150 mVp-p maximum, measured with 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel. PV operation may exceed the listed ripple/noise limit under some conditions.
Voltage accuracy and regulation	Voltage tolerance ±1.0%, including initial setting, line regulation and load regulation; line regulation ±0.5%; load regulation ±0.5%.
Timing	Setup 1500 ms and rise 60 ms at 230 VAC/full load. Typical hold-up: 16 ms at 230 VAC/70% load or 10 ms at 230 VAC/full load. Setup is measured at the first cold start; repeated ON/OFF operation can increase it.
Measurement conditions	Unless otherwise stated: 230 VAC input, rated load and 25°C ambient temperature.

Input, efficiency and operating limits

Rated input	90–264 VAC, 47–63 Hz; alternatively 250–400 V DC. Low-input operation requires load derating.
Efficiency and power factor	Typical efficiency 88.5%; typical power factor 0.97 at 230 VAC/full load.
AC current and inrush	Typical AC current: 14 A at 115 VAC; 8 A at 230 VAC. Typical cold-start inrush: 60 A at 230 VAC.
Low-line output limits	At 180–264 VAC: 1500 W / 125 A. 115 VAC: 1200 W / 100 A; 100 VAC: 1050 W / 87.5 A. The 60 Hz input graph marks 100% load at 180–264 VAC, 80% at 115 VAC and 70% at 100 VAC.
Below-rated-input graph point	The datasheet also plots 85 VAC at 55% load and lists 826 W / 68.8 A for this model. This plotted point does not extend the stated 90 VAC lower rated-input limit; confirm any intended operation below it with MEAN WELL.
Ambient-temperature derating	Operating range −40 to +85°C, subject to derating. The horizontal-installation curve is at 100% load through +50°C, 75% at +60°C, 50% at +70°C and 20% at +85°C. Input derating also applies.
Fan control and acoustic data	Fan speed follows internal temperature. Typical noise at 25°C ambient: 39 dB at 10% load; 43 dB at 70% load. Measurements follow ISO 7779.
Environment	Working humidity 20–90% RH, non-condensing. Storage: −40 to +85°C, 10–95% RH, non-condensing. Temperature coefficient ±0.03%/°C over 0–50°C. Vibration: 10–500 Hz, 2 G, 10 minutes/cycle, 60 minutes along each X/Y/Z axis.
Altitude derating	For this fan-cooled supply, reduce allowable ambient temperature by 5°C per 1000 m above 2000 m. The maximum installation altitude also depends on the applicable safety standard and overvoltage category.
Converter block frequencies	The block diagram identifies PFC switching at 90 kHz and PWM switching at 80 kHz. The efficiency-versus-load graph on PDF page 4 is for the 48 V model, measured at 115/230 VAC.

Protection and electrical isolation

Overload protection	105–115% of rated output power; constant-current limiting, followed by output shutdown after 5 seconds. After the output voltage falls and the fault is cleared, cycle power to recover. Short-circuit protection is also listed.
Overvoltage protection	15.75–18.75 V; output shutdown, with power cycling required for recovery.
Leakage current	Earth leakage <500 µA RMS at 264 VAC; touch current <100 µA RMS at 264 VAC.
Medical insulation barriers	Primary-to-secondary: 2 × MOPP; primary-to-earth: 1 × MOPP; secondary-to-earth: 1 × MOPP. The supply is described as suitable for BF medical applications; the finished equipment must meet its own applicable requirements.
Dielectric and insulation tests	Withstand voltage: input–output 4.2 kVAC; input–FG 2.1 kVAC; output–FG 1.5 kVAC. Insulation resistance: 100 MΩ for these three pairs, at 500 V DC, 25°C and 70% RH.

Programming, sensing and control connections

Output voltage programming	Apply external DC between CN1 pin 12 (PV) and pin 14 (−Vo signal) for 15–115% of nominal output voltage. The graph is explicitly non-linear: below the approximately 0.4 V transition it shows 100%; 0.4–1 V corresponds to 15%; marked points are approximately 42% at 2 V, 69% at 3 V, 96% at 4 V and 115% at 4.7 V. Do not use this as a zero-output dimming control.
Programmed-voltage current limit	The graph permits 100% rated current from 15% through 100% nominal output voltage, then reduces current to 80% at 115% voltage. Observe the current curve and rated-power limit when changing output voltage.
Remote ON/OFF	Connect CN1 pin 4 (R.C.) to pin 3 (+5V-aux) to turn the output ON; open the connection to turn it OFF. The pin table specifies ON at 4.5–5.5 V and OFF at −0.5 to +0.5 V, referenced to isolated GND-aux; maximum input 5.5 V. Pin 3 is for remote ON/OFF only. Switch, optocoupler and relay arrangements are shown on PDF page 5.
Remote and local sense	For remote sensing, connect pin 15 (+RS) to load positive and pin 16 (−RS) to load negative; twist the sense pair. Compensation is up to 0.5 V DC. If remote sensing is unused, connect pin 15 to pin 13 (+Vo signal) and pin 16 to pin 14 (−Vo signal). Signal pins 13/14 must not carry the load current.
DC-OK and temperature alarms	CN1 pin 5 is the DC-OK fail signal: high 3.5–5.5 V when Vout ≤77% ±5%, low −0.5 to +0.5 V when Vout ≥80% ±5%. Pin 6 T-ALARM is high for overtemperature or fan failure, low for normal temperature and fan operation. Both use pin 2 GND-aux and are isolated from the main output.
Alarm-interface load limit	The specification lists a maximum 5 V DC / 10 mA resistive load. The function section calls out a maximum sink current of 10 mA, while the pin table calls out a maximum sourcing current of 10 mA. Confirm the required drive direction and external interface with MEAN WELL; these two descriptions are not a guarantee of simultaneous bidirectional drive.
Auxiliary output	CN1 pin 1 provides nominal 12 V auxiliary power, specified as 10.6–13.2 V DC with 0.8 A maximum load, referenced to pin 2 GND-aux. It has built-in ORing diodes and remains available independently of Remote ON/OFF.
CN1 connector and remaining pins	HRS DF11-16DP-2DS or equivalent; mating housing DF11-16DS and DF11-**SC terminals or equivalents. Pins 7/8/9 are CANBus address lines A0/A1/A2; pins 10/11 are reserved NC. Address lines and PV are non-isolated and referenced to −Vo(signal); remote control and alarm signals use isolated GND-aux.
CANBus and CN2	Built-in CANBus supports control, setting and monitoring. CN2 is HRS DF11-8DP-2DS or equivalent, mating DF11-8DS with DF11-**SC terminals or equivalents. Pins 1–4 are NC; 5/6 are −Vo(signal), not load terminals; pin 7 is CANH and pin 8 CANL. CAN data signals are isolated and referenced to GND-aux.

Mechanical installation and accessories

Dimensions and case	310 × 85 × 41 mm (L × W × H); main-datasheet case No. 296A; mechanical drawing tolerance ±0.5 mm. Allow access to the SVR adjuster, LED, connectors and the indicated airflow path.
Mounting drawing coordinates	Bottom mounting: three M3 positions. Bottom drawing: 16.1 mm end offset, 264.7 mm longitudinal spacing, 70 mm transverse spacing, and 7.5 / 42.5 mm transverse offsets. Side drawing: 252 mm longitudinal spacing, 5.8 mm end offset, 16.8 / 22.8 mm vertical positions and Ø2.8 mm secondary holes. Use the corresponding views on PDF page 7 when laying out the mounting surface. Screw penetration is measured into the chassis from the mounting surface. Each side has two M4 and two Ø2.8 mm positions. Installed-bracket centers: 252 × 105 mm; outer transverse span: 115 mm; rear centerline to case rear edge: 51.3 mm. Slots: 6 × 4 mm; local drawing offsets: 15 and 17 mm.
Power terminals	AC input: pin 1 FG (protective earth), pin 2 AC/N, pin 3 AC/L; M3.5 screw thread, maximum mounting torque 8 kgf·cm. Connect the load to the marked +Vo/−Vo output terminals. The output-terminal drawing includes Ø6.5 mm holes and two M3 features; follow the applicable connection hardware drawing. Page 7 output-terminal views also mark 30/20 mm longitudinal and 21.6/29.6 mm vertical offsets in the upper side view, 13 mm and 12 mm maximum in the lower side view, and 28/38 mm with 2 mm terminal thickness in the top view.
Included control harness	One CN1 mating-wire assembly is listed as a standard accessory supplied with the MSP-1600: UL1007, 26 AWG, HRS DF11-16DS or equivalent; the accessory drawing marks 15 mm.
Optional installation accessories	The main datasheet lists PGG2MHS013A brackets as separately ordered by-request accessories, four per supply, and PEE4TBC-03-DG terminal cover as separately ordered by request, one per supply. Confirm the accessory contents for the supplied hardware/document version. The bracket installation drawing uses M4 × 4 combination screws.

Safety, EMC and reliability

Safety approvals	The safety table lists CB: IEC 60335-1, IEC 61558-1/-2-16, IEC 61010-1/-2-201, IEC 60601-1 version 3.2, IEC 62477-1 and IEC 62368-1; DEKRA: BS EN/EN 60601-1, 60335-1, 61558-1/-2-16, 61010-1/-2-201 and 62477-1; UL: ANSI/AAMI ES60601-1 version 3.2 and UL 61010-1/-2-201. Also listed: CQC GB4943.1, BSMI CNS15598-1, EAC TP TC 004 and SEMI F47 approval.
Requested marks and variants	KC 62368-1 and BIS IS13252 Part 1 certification are listed by request with no stock; contact MEAN WELL for the appropriate supplied version. Some factories/models may not carry the BIS logo. The RCM mark is applied voluntarily under the stated applicable IEC/AS/NZS framework.
Overvoltage category and altitude	IEC/EN 61558-1/-2-16: OVC III up to 2000 m. IEC/EN/ANSI/AAMI ES60601-1: OVC II up to 4000 m. IEC 62368-1, IEC/EN 60335-1, IEC/EN/UL 61010-1/-2-201 and IEC/EN 62477-1: OVC II up to 5000 m. These conditions are not interchangeable.
SELV scope	The table specifies SELV for 12–48 V under IEC/EN 61558-2-16; SELV for 12–36 V under IEC/EN 60335-1; SELV/ES1 for 12–48 V under IEC 62368-1. The 48 V model is outside the listed 60335-1 SELV range.
EMC emissions	Conducted and radiated Class B: BS EN/EN 55032 (CISPR 32), CNS15936, GB/T9254.1, KS C9832 and BS EN/EN 55011 (CISPR 11). BS EN/EN 55014-1 is also listed without a class in the table. Harmonic current: BS EN/EN 61000-3-2 Class A; voltage flicker: BS EN/EN 61000-3-3.
EMC immunity	Listed framework: BS EN/EN 55035, 61000-6-2, 60601-1-2, 55014-2, KS C9835 and SEMI F47 tested at 200 VAC. IEC/EN 61000-4-2: Level 4, 15 kV air / 8 kV contact; -4-3: Level 3, 10 V/m at 80 MHz–2.7 GHz, plus Table 9 at 9–28 V/m over 385 MHz–5.78 GHz; -4-4: Level 3, 2 kV; -4-5: Level 4, 2 kV line–line / 4 kV line–earth; -4-6: Level 3, 10 V; -4-8: Level 4, 30 A/m.
Dips and system EMC	IEC/EN 61000-4-11: >95% dip for 0.5 periods, 30% dip for 25 periods and >95% interruption for 250 periods.
MTBF	653.8 thousand hours minimum, Telcordia SR-332 (Bellcore); 65.3 thousand hours minimum, MIL-HDBK-217F at 25°C. These are reliability estimates, not service-life guarantees.
Weight and packing	1720 g catalog packing reference per unit, not a measured net weight. Carton reference: 6 units / 11.3 kg / 1.28 CUFT.

CAN monitoring ranges

CAN input-voltage readout	READ_VIN display range: 80–264 VAC, tolerance ±10 V. This is a readout range, not an extension of the stated input operating range.
CAN output readout	READ_VOUT: 0–15 V, tolerance ±0.18 V. READ_IOUT: 0–150 A, tolerance ±2.5 A. These monitoring ranges do not increase the rated output or permitted load.
Low-current display threshold	The manual lists a minimum readout current of 5 A, with ±1 A tolerance; below this level the communication current readout displays zero.
Temperature and fan readout	READ_TEMPERATURE_1: −40 to +110°C, tolerance ±5°C, for internal temperature. Fan-speed readout: 0–26500 RPM, tolerance ±2000 RPM. These are monitoring ranges, not allowable ambient-temperature or fan operating ratings.

Installation and digital-control guidance

Installation and ventilation	Installation and servicing must be carried out by a qualified technician. Disconnect AC power before working on the unit and do not remove its case yourself. Connect FG to protective earth for this Class I power supply. Use a sufficiently strong chassis, avoid high dust, moisture, heat and direct sunlight, and do not stack units. Keep ventilation openings unobstructed with at least 15 cm clearance; also keep the unit at least 15 cm from an adjacent heat source.
Mounting and power-terminal connections	Follow the supplied unit drawing: M3 mounting screws may penetrate no more than 4 mm at 6–8 kgf·cm, and M4 screws no more than 5 mm at 7–10 kgf·cm. AC terminals are 1 FG, 2 N and 3 L. The manual recommends 8 kgf·cm for the M3.5 AC screws, which is also the datasheet maximum; it recommends 33.1 kgf·cm for the M6 DC output screws. Use the specified connection hardware, observe DC polarity and prevent short circuits.
Conductor selection	Keep power wiring as short as possible, preferably under 1 m. Select conductors for the actual current, temperature, terminal capability and applicable installation rules. The manual recommends 14 AWG for AC input. Its DC guide pairs 8/6/4/2/1/0/000/0000 AWG with 6/10/16/25/35/50/75/95 mm² and maximum guide currents of 40/60/80/100/125/160/190/230 A. These are the manual’s recommendations, not exact AWG-to-mm² conversions or permission to exceed the power-supply rating.
CAN bus wiring and addresses	Use CAN 2.0B extended 29-bit frames at 250 kbps. CN2 pin 7 is CANH and pin 8 is CANL; fit 120 Ω termination at each end of the bus and follow the manual’s common-ground connection through CN1 pin 2 GND-aux. CN1 A0/A1/A2 on pins 7/8/9 select addresses 00–07: short to pin 14 −Vo (Signal) is logic 0, and open is logic 1. These are communication addresses; they do not establish a parallel-output or current-sharing capability.
CAN request and response timing	Allow at least 50 ms between request starts, up to 12.5 ms for the PSU response, and at least 12.5 ms between packets as shown in the communication timing diagram. Write commands do not return acknowledgement data; read the parameter back when confirmation is required.
Control priority and digital enable	The factory setting uses analog control; CAN monitoring is available but CAN output-control commands are inactive until CAN_CTRL, bit 0 of SYSTEM_CONFIG (0x00C2), is set to 1. The active priority is CAN control, then PV, then SVR. OPERATION, VOUT_SET and IOUT_SET may be prepared before enabling CAN control, but take effect only after it is enabled. No separate analog current-programming input is specified for this model.
Digital setpoint range	The manual’s control table gives VOUT_SET 1.8–13.8 V with ±0.18 V tolerance and a 12 V default, and IOUT_SET 25–137.5 A with ±2.5 A tolerance and a 137.5 A default. These are programmable settings, not a continuous output rating: keep actual operation within 1500 W, 125 A and all applicable voltage, input and temperature derating limits. Digital control, analog PV and the SVR adjustment range are distinct interfaces.
EEPROM and power-on settings	Choose EEPROM write behaviour to suit the application and its limited write endurance: immediate storage is the default, or store after all parameters remain unchanged for 1 minute or 10 minutes. EEP_OFF can disable storage; commands must not be assumed to survive a power cycle when storage is disabled. OPERATION_INIT selects OFF, ON (factory default), or the previous operation value at power-on. Reserved settings are not operating modes. The five most recent event logs remain after power-off; a new event shifts the older entries and discards the oldest when full.
Restoring factory settings	Turn AC off and short A0, A1 and A2 to −Vo (Signal). Turn AC on with the output in REMOTE OFF, then within 15 seconds change all three address connections from shorted to open and back to shorted. Three green flashes confirm success. Turn AC off, wait for the LED to go out, then turn AC on again. If EEPROM storage was disabled, repeat the manual’s steps 1–4 to restore the parameters fully. This procedure resets OPERATION, VOUT_SET, IOUT_SET and SYSTEM_CONFIG.
Normal and warning indications	Green indicates normal operation; steady red indicates Remote OFF. Continuous red flashing warns of high ambient temperature without itself shutting the output down. Keep this warning distinct from counted red fault flashes: 1 overload, 2 overvoltage, 3 overtemperature, 4 fan failure, and 5 other faults such as short circuit, AC undervoltage or EEPROM error.
Restart and fault handling	After switching the unit off, the manual recommends waiting 10 seconds before switching it on again so the inrush limiter can cool. Clear overload, overvoltage, short-circuit, AC-undervoltage or fan faults before restarting. For overtemperature, the datasheet describes automatic recovery as temperature falls; the manual’s service procedure is to switch AC off, remove the cause of overheating and let the unit cool to normal temperature before restarting, which may take several tens of minutes. The fan continues cooling during OTP. Persistent faults require qualified servicing.
Document and supplied-version checks	Use the selected datasheet’s 90–264 VAC operating range. The June 2026 user manual instead lists 85–264 VAC; retain the selected datasheet rating for this listing, and note that the 85 VAC point on its static derating graph is not a lower rated operating limit. The datasheet identifies Case 296A, while the user manual shows Case 296C, so confirm the supplied mechanical revision before installation. The datasheet lists the PEE4TBC-03-DG cover as a separately ordered, by-request accessory; the manual depicts it as standard. Confirm the actual order contents rather than assuming that a cover is included.
Warranty conditions	The user manual specifies a five-year warranty under normal usage. Unauthorized replacement of parts or modification may invalidate the warranty; use the manufacturer’s service procedure for a defective unit.
Complete-system EMC verification	Recheck EMC with the power supply installed in the final equipment and connected to its representative load. Wiring, assembly and the application affect the result. The MSP-1600 datasheet records a 720 × 360 × 1 mm metal plate for its component EMC test; it is a test arrangement, not a supplied accessory or an installation-clearance requirement. The linked EMI guidance does not certify the finished equipment.