MEAN WELL NSP-3200-48 is a single-output enclosed industrial AC/DC power supply rated at 48 V DC, 67 A and 3216 W. It accepts 90 to 264 VAC or 127 to 400 VDC and combines active PFC, intelligent fan cooling, built-in CANBus, voltage programming and remote sensing in a 41 mm low-profile housing. Apply the input, thermal and programmed-output limits below.
Product Datasheet
Download MEAN WELL NSP-3200 Datasheet (PDF)
The NSP-3200 section is on PDF pages 9, 10, 11, 12, 13, 14, 15, 16. Refer to the complete mechanical drawings and notes when planning installation.
Model, Output and Control Range
| Complete model |
NSP-3200-48 |
| Nominal DC output |
48 V |
| Rated current / current range |
67 A / 0 to 67 A |
| Rated output power |
3216 W |
| Maximum ripple and noise |
480 mVp-p |
| Built-in voltage adjustment |
47.5 to 58.8 V |
| Voltage tolerance / line / load regulation |
±1.0% / ±0.5% / ±0.5% |
| Typical efficiency |
94.5%, measured at 75% load |
| External voltage programming |
50 to 125% of nominal voltage; 24.0 to 60.00 V |
| Communication |
Built-in CANBus; CAN 2.0B |
The complete model comprises the NSP family, 3200 power class and 48 V output code. The actual rating is 3216 W; the family number is not an additional continuous power rating.
Unless otherwise stated, measurements use 230 VAC, rated load and 25°C ambient; efficiency is specifically measured at 75% load. Ripple/noise uses 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel. Voltage tolerance includes setup, line and load regulation.
Input, Timing and Protection
| Continuous input |
90 to 264 VAC / 127 to 400 VDC; 47 to 63 Hz |
| Typical power factor |
0.97 at 230 VAC, full load |
| Typical AC input current |
17 A at 230 VAC |
| Typical cold-start inrush |
55 A at 230 VAC |
| Leakage current |
<2 mA at 230 VAC |
| Setup / rise time |
1500 / 60 ms at 230 VAC, full load |
| Typical hold-up time |
16 ms at 70% load; 8 ms at full load, 230 VAC |
| Overload threshold |
105 to 115% of rated output power |
| Overvoltage threshold |
63 to 75 V |
Active PFC and active inrush-current limiting are shown in the block diagram. PFC and PWM switching frequencies are 110 kHz and 90 kHz respectively.
Short-circuit/overload protection uses constant-current limiting. The output shuts down 5 seconds after the output voltage has fallen low; re-power to recover. This is a protection behavior, not a separate uninterrupted constant-current output rating.
Overvoltage protection shuts down the output and requires re-powering. Overtemperature protection shuts down the output and recovers automatically after temperature falls.
Cooling, Environment and Derating
| Cooling |
Built-in DC fans with intelligent speed control based on internal PSU temperature |
| Working temperature |
-20 to +70°C, with derating |
| Typical fan noise at 25°C |
38 dB at 10% load; 38 dB at 70% load; ISO 7779 test setup |
| Humidity / storage |
Operation: 20 to 90% RH, non-condensing; storage: -40 to +85°C, 10 to 95% RH, non-condensing |
| Temperature coefficient |
±0.03%/°C from 0 to 50°C |
The 60 Hz input-derating table permits 3216 W / 67 A at 180 to 264 VAC and 1608 W / 33.5 A at 90 VAC. Printed curve annotations show approximately 55% load at 100 VAC and 64% at 115 VAC; follow the complete curve between these points.
For the illustrated horizontal mounting, the temperature curve permits full load from -20 to 50°C, then 75% at 60°C and 50% at 70°C. Apply the input and temperature limits together; the upper temperature is not a full-load rating.
The efficiency-versus-load graph applies to the 48 V model at 230 VAC. It does not establish an efficiency curve for all models or input conditions.
Above 2000 m altitude, reduce allowable ambient temperature by 5°C per additional 1000 m for this fan-cooled model. The note does not specify an unlimited or exact maximum altitude. Keep the illustrated airflow path clear.
Vibration: 10 to 500 Hz, 2 G; 10 minutes per cycle and 60 minutes along each X, Y and Z axis.
Voltage Programming and Sensing
Apply the external DC voltage-programming signal to CN1 pin 12 (PV), referenced to pin 14 (-Vo Signal). This analog control range is separate from adjustment by the built-in potentiometer.
Follow the complete PV curve: below approximately 0.4 V control the diagram shows nominal output; 0.4 to 1 V selects the 50% minimum. Marked points then indicate about 70% at 2 V, 90% at 3 V, 110% at 4 V and 125% at 4.7 to 5 V. The transition at the low end means the whole control range must not be treated as one linear conversion.
The permitted output current also changes with programmed voltage: 80% of rated current from 50 to 90% nominal voltage, rising to 100% at 95%, remaining 100% through nominal voltage, then falling to 80% at 125%. Follow the diagram and all input/thermal limits. With PV adjustment, ripple/noise may under some operating conditions slightly exceed the normal specified limit.
Remote sense compensates up to 0.5 V of load-wiring drop. Connect CN1 pin 15 (+RS) to the positive load terminal and pin 16 (-RS) to the negative load terminal; twist the sense pair to reduce noise pickup.
When remote sense is not used, connect pin 15 to pin 13 (+Vo Signal) and pin 16 to pin 14 (-Vo Signal) for local sensing. Do not additionally bridge these sense leads locally while using the remote-load sensing connection. Signal pins 13 and 14 cannot supply the load.
Remote Control, Auxiliary Power and Alarms
For dry-contact remote ON/OFF, connect a switch between CN1 pin 3 (+5V-aux) and pin 4 (R.C): short is ON, open is OFF. For electrical control, pin 4 is an isolated signal referenced to pin 2 (GND-aux); 4.5 to 5.5 V is ON and -0.5 to +0.5 V is OFF, maximum 5.5 V. Pin 3 is only for remote-control use, not a rated general-purpose 5 V supply.
CN1 pin 1 provides nominal 12 V auxiliary power at up to 0.8 A relative to pin 2. The specification lists ±10% tolerance; the detailed pin table gives 10.6 to 13.2 V. It incorporates ORing diodes, is isolated from the main output and remains independent of remote ON/OFF.
DC-OK (CN1 pin 5) and T-ALARM (pin 6) are isolated TTL outputs referenced to GND-aux, with a 10 mA maximum signal-current rating. DC-OK is high, 3.5 to 5.5 V, when output is at or below 77% ±5%, and low, -0.5 to +0.5 V, when output is at or above 80% ±5%. High therefore indicates the DC-output failure condition, not OK.
T-ALARM is high, 3.5 to 5.5 V, for an internal temperature alarm or fan failure, and low, -0.5 to +0.5 V, when internal temperature and fan operation are normal.
The LED is green during normal operation and steady red for an abnormal condition such as OTP, OLP or fan failure. Flashing red at 60°C internal temperature is an early warning: the unit still operates normally without entering OTP, and an alarm is also sent over CANBus. This is internal temperature, not a 60°C ambient switch point.
CANBus and Connector Pin Assignments
The built-in CAN 2.0B interface supports information reading, status monitoring and output trimming. The datasheet lists a maximum bus speed of 250 kHz; use the manufacturer user manual for the complete protocol and setup.
CN1 uses HRS DF11-16DP-2DS or equivalent, with HRS DF11-16DS mating housing or equivalent. Pins are 1 +12V-aux, 2 GND-aux, 3 +5V-aux (remote-control use only), 4 R.C, 5 DC-OK, 6 T-ALARM, 7/8/9 A0/A1/A2 CANBus address lines, 10/11 NC, 12 PV, 13 +Vo Signal, 14 -Vo Signal, 15 +RS and 16 -RS. Address and PV signals are non-isolated and referenced to -Vo Signal.
CN2 uses HRS DF11-8DP-2DS or equivalent, with HRS DF11-8DS mating housing or equivalent. Pins 1 to 4 are NC; pins 5 and 6 are -Vo Signal and cannot connect directly to the load; pins 7 and 8 are CANH and CANL. CAN data signals are isolated and referenced to GND-aux; do not interchange the isolated return with -Vo Signal.
The printed crimp-contact reference for these connectors is HRS DF11-**SC or equivalent. The asterisks are an incomplete contact designation, so the exact contact must be selected for the wire and housing before ordering. No unlisted contact suffix is implied.
Dimensions, Weight and Mounting
| Housing dimensions (L × W × H) |
325.8 × 107 × 41 mm; 1U low profile |
| Catalog single-unit packing reference |
2240 g (2.24 kg per unit) |
| Packing reference |
4 pcs / 10 kg / 1.09 CUFT |
| Case / drawing tolerance |
Case No. 294A; dimensions in mm, ±0.5 mm |
The manufacturer describes the series as reaching up to 37 W/in³ power density; this is a family-level claim, not a separately established value for every operating point. The single-unit packing reference is not a measured net or parcel weight.
The side view marks 2-M4 L=5 on each side and the bottom 3-M3 L=4. M3 mounting screws have a maximum penetration depth of 4 mm and recommended torque 6 to 8 kgf·cm; M4 has maximum penetration 5 mm and torque 7 to 10 kgf·cm.
Allow for the terminal and bracket envelope as shown in the full drawing: -Vo and +Vo output bars extend 28 mm and 38 mm respectively, while the AC terminal projection is 12 mm maximum. The output-hole diameter is 6.5 mm; bracket-related transverse dimensions are 127 and 137 mm. These are separate from the 107 mm housing width.
AC input terminals are 1 FG (protective earth), 2 AC/N and 3 AC/L. Their screw thread is M3.5 and maximum torque is 8 kgf·cm. Do not apply case-mounting torque indiscriminately to electrical terminals. Follow the drawing for hole centres and keep airflow from the terminal end toward the rear fans unobstructed.
Supplied Control Wire and Optional Brackets
One CN1 control-interface mating wire assembly per unit is listed as a standard accessory. The drawing identifies HRS DF11-16DS or equivalent and UL1007 26AWG wire. Its inclusion is distinct from unlisted spare housings or contacts; no separate complete MEAN WELL assembly-order code is supplied in this list.
Mounting bracket PGG2MHS013A is a by-request accessory ordered separately, four brackets per unit. The installation diagram shows the four bracket positions and labels the combination screw M4 × 4. This screw-size label does not establish an additional order code or that screws are supplied with the bracket. Retain the mounting-depth and torque limits above.
Safety, EMC and Reliability
The datasheet lists approval to UL62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1, BIS IS 13252 (Part 1):2010 / IEC 60950-1:2005 and EAC TP TC 004. SEMI F47 is a design reference at 200 VAC, not an unconditional certification statement.
Dielectric withstand: input-to-output 3 kVAC, input-to-FG 2 kVAC and output-to-FG 1.5 kVAC. Insulation resistance for the three paths is 100 MΩ at 500 VDC, 25°C and 70% RH.
Emissions: BS EN/EN55032 (CISPR32), conducted Class B and radiated Class A; harmonic current BS EN/EN61000-3-2 Class A; voltage flicker BS EN/EN61000-3-3.
Immunity: BS EN/EN55024 and BS EN/EN61000-6-2. IEC/EN61000-4 tests list ESD at 8 kV air / 4 kV contact; radiated RF, EFT/burst and conducted RF Level 3; surge 2 kV line-line / 4 kV line-earth; magnetic field Level 4. Voltage dips/interruption are >95% for 0.5 periods, 30% for 25 periods and >95% for 250 periods.
This supply is a component for installation in final equipment. EMC tests mount it on a 600 × 900 mm metal plate, 1 mm thick; the finished equipment must be reconfirmed against its EMC requirements.
MTBF is 637.4K hours minimum by Telcordia SR-332 (Bellcore), or 63.7K hours minimum by MIL-HDBK-217F at 25°C. MTBF is a reliability calculation, not a service-life guarantee. Manufacturer-stated warranty: 5 years.
