MEAN WELL RSP-1500-12 is an enclosed single-output AC/DC power supply rated at 12 V DC, 125 A and 1500 W, with active PFC and a built-in DC fan. It accepts 90 to 264 VAC or 127 to 370 VDC. Apply the input, temperature and functional limits below.
Product Datasheet
Download MEAN WELL RSP-1500 Datasheet (PDF)
The RSP-1500 section is on PDF pages 17, 18, 19, 20, 21, 22, 23, 24, 25. Refer to the complete mechanical drawings and notes when planning installation.
Model and Output Specifications
| Complete model |
RSP-1500-12 |
| Nominal DC output |
12 V |
| Rated current / current range |
125 A / 0 to 125 A |
| Rated output power |
1500 W |
| Maximum ripple and noise |
150 mVp-p |
| Voltage adjustment by built-in SVR |
10 to 13.5 V |
| Voltage tolerance / line / load regulation |
±1.0% / ±0.5% / ±0.5% |
| Typical efficiency |
87% |
Unless otherwise specified, parameters are measured at 230 VAC input, rated load and 25°C ambient. Ripple and noise use 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel. Voltage tolerance includes setup tolerance, line regulation and load regulation.
Input, Timing and Protection
| Continuous input range |
90 to 264 VAC / 127 to 370 VDC; 47 to 63 Hz |
| Active PFC, typical power factor |
0.95 at 230 VAC; 0.98 at 115 VAC, full load |
| Typical AC input current |
17 A at 115 VAC; 8 A at 230 VAC |
| Typical inrush current |
30 A at 115 VAC; 60 A at 230 VAC |
| Leakage current |
<2 mA at 240 VAC |
| Setup / rise / typical hold-up time |
1500 / 100 ms at full load; hold-up 10 ms at full load |
| Overload threshold |
105 to 135% of rated output power |
| Overvoltage threshold |
13.8 to 16.8 V |
Short-circuit and overload protection use constant-current limiting, followed by output shutdown after 5 seconds. Re-power to recover.
Overvoltage protection shuts down the output and requires re-powering. Overtemperature protection shuts down the output and recovers automatically when temperature decreases. These protection thresholds are not additional continuous output ratings.
The block diagram includes active inrush-current limiting and shows PFC / PWM switching frequencies of 70 / 100 kHz.
Cooling, Environment and Derating
| Cooling |
Built-in DC fan, forced-air cooling |
| Working temperature |
-20 to 70°C, with derating |
| Humidity and storage |
Operation: 20 to 90% RH; storage: -40 to +85°C and 10 to 95% RH, non-condensing |
| Temperature coefficient |
±0.05%/°C from 0 to 50°C |
The 60 Hz input-derating table specifies 100–264 VAC: 1500 W / 125 A; 90 VAC: 1200 W / 100 A.
In the horizontal installation shown, full-load operation extends to 45°C; the permitted load then falls along the model-specific curve to 50% at 70°C. Apply input and temperature derating together.
For this fan-cooled model, reduce the allowable ambient temperature by 5°C per 1000 m above 2000 m altitude. This note does not establish an unlimited operating altitude.
Vibration rating: 10 to 500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis. Keep the fan inlet and outlet clear.
The published efficiency-versus-load graph is for the 48 V model measured at 230 VAC; it is not an efficiency curve for every voltage or input condition.
Remote Sense and Voltage Programming
Remote sense compensates up to 0.3 V of load-wiring drop. For remote sensing, connect CN1 pin 8 (+S) and pin 7 (-S) to the corresponding load terminals using a twisted pair. The local-sense/PV example instead connects +S to +V and -S to -V at the supply; do not additionally bridge the sense leads locally while using the remote-sense load connection.
External-resistor voltage programming provides approximately 70 to 100% of nominal output. Connect a resistor rated at least 0.25 W between TRIM (pin 4) and -S (pin 3, 5 or 7) on CN1 or CN2. The typical curve indicates 0 ohm at 70%, 470 ohm at 80%, 1.8 kohm at 90% and open circuit at 100%. This resistor-control range is separate from the SVR adjustment range.
Remote ON/OFF, Auxiliary Supply and Power OK
Remote-control terminals are RCG (CN2 pin 1), RC2 (CN2 pin 2), and RC1 (CN3 pin 5). The external-voltage circuit uses 5 V and the illustrated 620-ohm series resistor between RC2 and RCG: open switch turns the output ON; closed switch turns it OFF.
For the internal-auxiliary circuit shown in figure 3.2(B), connect RC1 to RC2 and switch RCG to AUXG: open is ON, closed is OFF. In figure 3.2(C), join RC1 to RC2, join RCG to AUXG, and place the switch between those two joined groups: closed is ON, open is OFF. Use one complete illustrated circuit; do not combine these arrangements.
CN3 pin 6 (AUX) supplies 12 V at up to 0.1 A relative to pin 4 (AUXG), only for remote ON/OFF control. It is not specified as a general-purpose auxiliary load supply.
Power OK uses CN3 pin 2 (P OK) and pin 1 (P OK GND). This open-collector output needs an external supply and pull-up resistor. Above 65% of rated output voltage, the signal is low (0.5 V maximum at 10 mA) to indicate OK; below 65%, it is high/open to indicate failure. Maximum sink rating is 10 mA at 50 V.
Parallel Operation
Use up to four compatible supplies with short, large-diameter output wiring. Adjust the difference between individual output voltages to less than 0.2 V. The maximum shared current is rated current per unit × number of units × 0.9; derating still applies.
Connect the +S, -S and current-sharing signals between units as shown in the parallel diagram. The current-sharing terminal is labelled LS (pin 6 of CN1/CN2); the connection diagram also uses CS for this function. Remote-sense wires to the load are connected to the master unit only, using a twisted pair. Do not treat the family 6000 W (3+1) headline as a guaranteed usable load rating for every voltage model.
Connectors and Pin Assignments
CN1 and CN2 use HRS DF11-8DP-2DS headers or equivalent and are internally connected. Their pin assignments are 1 RCG, 2 RC2, 3/5/7 -S, 4 TRIM, 6 LS (current sharing), and 8 +S. The listed mating housing is HRS DF11-8DS or equivalent.
CN3 uses HRS DF11-6DP-2DS or equivalent: 1 P OK GND, 2 P OK, 3 RCG, 4 AUXG, 5 RC1, and 6 AUX. Its listed mating housing is HRS DF11-6DS or equivalent.
The crimp-contact reference is printed as HRS DF11-**SC or equivalent. The asterisks are an incomplete contact designation: select the exact compatible contact for the intended wire and housing before ordering. These connector references identify mating parts; they do not establish that loose housings, contacts, cables or jumpers are included. The drawings state the required connections, not a confirmed factory-installed jumper configuration.
Dimensions, Weight and Installation
| Housing dimensions (L × W × H) |
278 × 127 × 83.5 mm |
| Catalog single-unit reference weight |
3000 g |
| Packing reference |
3.0 kg; 4 pcs / 13 kg / 1.19 CUFT |
Drawing dimensions are in millimetres with ±0.5 mm tolerance. Housing dimensions exclude the need to allow for terminal projections, mounting flanges, wiring and the airflow shown in the complete drawing.
Case No. 943A is 2U high. The drawing marks 8-M4 L=5 holes across both sides and 4-M4 L=5 on top. Recommended mounting screws are M4, maximum penetration 5 mm, with 7 to 10 kgf·cm mounting torque. The AC input terminal projection is 16 mm maximum; the output copper bars extend 38 mm. The output bar drawing marks 2-M4 and an 8.5 mm hole.
AC terminal assignment: 1 FG (protective earth), 2 AC/N, 3 AC/L. Maximum AC-terminal mounting torque is 18 kgf·cm. The drawing identifies the LED and SVR. Use the complete drawing for mounting centres and terminal clearances; hole annotations are not quantities of supplied screws.
Safety, EMC and Reliability
UL62368-1, CAN/CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, AS/NZS62368.1 and EAC TP TC 004 are listed as approved in this datasheet.
Dielectric withstand: input-to-output 3 kVAC; input-to-FG 2 kVAC; output-to-FG 0.5 kVAC. Insulation resistance is 100 MΩ at 500 VDC, 25°C and 70% RH for input/output, input/FG and output/FG.
Conducted emissions: BS EN/EN55032 (CISPR32), BSMI CNS15936, Class B / Class A only for BSMI; radiated emissions: Class A. Harmonic current is listed against BS EN/EN61000-3-2 without a class in this table; voltage flicker against BS EN/EN61000-3-3.
Immunity: BS EN/EN55035 and BS EN/EN61000-6-2. IEC/EN61000-4 tests list ESD Level 3 (8 kV air) / Level 2 (4 kV contact), radiated RF Level 3, EFT/burst Level 2, surge Level 3 (2 kV line-earth) / Level 2 (1 kV line-line), conducted RF Level 3, and magnetic field Level 4.
Voltage-dip and interruption tests list >95% dip for 0.5 periods, 30% dip for 25 periods, and >95% interruption for 250 periods.
This power supply is a component for installation in final equipment. EMC tests use a 720 × 360 mm metal plate, 1 mm thick; the completed equipment must be reconfirmed against its applicable EMC requirements.
MTBF: 814.4K hours minimum by Telcordia SR-332 (Bellcore), and 90.4K hours minimum by MIL-HDBK-217F at 25°C. MTBF is a reliability calculation, not a service-life guarantee. Manufacturer-stated warranty: 5 years.
Conformal coating is listed as an optional treatment for RSP-1500. It is not established as included in the unsuffixed model; confirm the selected coating arrangement when ordering.
