MEAN WELL RSP-2000-48 is a single-output enclosed AC/DC power supply rated 48 V, 42 A and 2016 W. Its 295 × 127 × 41 mm enclosure provides a 1U profile with fan cooling and active PFC. Built-in remote sensing, voltage programming, auxiliary outputs, status signals and active current sharing support industrial control, test and automation systems. Output availability depends on input voltage, temperature and the selected control mode.
Product Datasheet
Download MEAN WELL RSP-2000 Datasheet (PDF)
The RSP-2000 section is on PDF pages 34, 35, 36, 37, 38, 39, 40. Refer to the complete mechanical drawings and notes when planning installation.
Model and Rated Output
| Complete model |
RSP-2000-48 |
| Model code |
RSP = series; 2000 = power-family designation; 48 = nominal 48 V output. The actual rating of this model is 2016 W. |
| Rated DC output |
48 V; 42 A; 2016 W |
| Output current range |
0–42 A |
| Local voltage adjustment |
42–56 V via built-in potentiometer |
| Ripple and noise, maximum |
300 mVp-p |
| Voltage tolerance |
±1.0% including setup, line and load regulation |
| Line / load regulation |
±0.5% / ±0.5% |
| Typical efficiency |
92% |
| Setup / rise time |
1500 ms / 60 ms at 230 VAC, full load |
| Typical hold-up time |
16 ms at 230 VAC, 75% load; 10 ms at 230 VAC, full load |
Unless otherwise stated, catalog parameters are measured at 230 VAC input, rated load and 25°C ambient. Ripple and noise use a 20 MHz bandwidth and a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors in parallel.
Input and Available Power
| AC input / frequency |
90–264 VAC; 47–63 Hz; single-phase line and neutral input |
| DC input |
250–320 VDC; applications at 320–370 VDC require confirmation from MEAN WELL |
| Power factor, typical |
0.97 at 230 VAC, full load; built-in active PFC |
| AC current, typical |
16 A at 115 VAC; 10 A at 230 VAC |
| Cold-start inrush, typical |
50 A |
| Leakage current |
Less than 2 mA at 240 VAC |
| At 180–264 VAC |
2016 W / 42 A at nominal 48 V, subject to temperature limits |
| At 115 VAC |
1612.8 W / 33.6 A at nominal 48 V |
| At 100 VAC |
1512 W / 31.5 A at nominal 48 V |
| At 90 VAC |
1310.4 W / 27.3 A at nominal 48 V |
The low-line power values are the model-specific static-characteristic ratings at 60 Hz. Apply both input-voltage and ambient-temperature derating; the universal input range does not mean full output is available at every input voltage.
Protection
| Short circuit and overload |
105–125% of rated output power; constant-current limiting, followed by output shutdown after 5 seconds. Reapply power to recover. |
| Overvoltage |
57.6–67.2 V; output shuts down, with recovery by reapplying power |
| Overtemperature |
Output shuts down and recovers automatically after the temperature falls |
Remote Sensing and Voltage Programming
| Remote-sense compensation |
Up to 0.5 V of voltage drop in the load wiring |
| CN501 sensing pins |
Pin 1 = +S; pin 2 = −S. Connect +S to the positive load terminal and −S to the negative load terminal. |
| Voltage-programming input |
CN501 pin 3 = PV; pin 4 = GND, referenced to output −V. This control is non-isolated. |
| Model-specific programming curve |
40–115% of nominal voltage in the function graph; observe the nonlinear region and model-specific graph before applying an external control voltage. |
Twist the sensing wires together to reduce noise pickup. For local sensing in the programming arrangement, connect +S to +V and −S to −V as shown in the function diagram.
For this model, the PV graph shows a lower plateau at approximately 40% output between 0.4 and 1 V external control, followed by an increase to approximately 115% at 4.7 V. Below approximately 0.4 V control the graph shows nominal output; do not extrapolate a linear adjustment down to zero volts.
Above 100% nominal output voltage, reduce allowable output current according to the programming curve; at 115% voltage the plotted current limit is approximately 87% of rated current. Observe the rated power and all other derating limits.
Remote ON/OFF, Auxiliary Outputs and Status
| Remote ON/OFF |
CN501 pin 7 to pin 11 (+5V-AUX): open = output ON; short = output OFF. Maximum input voltage is 5.5 V. |
| Auxiliary signal return |
CN501 pins 8, 9 and 10 = GND-AUX, isolated from the main +V/−V output terminals |
| 5 V auxiliary output |
CN501 pin 11: 4.5–5.5 V, maximum 0.3 A, referenced to GND-AUX |
| 12 V auxiliary output |
CN501 pin 12: 10.6–13.2 V, maximum 0.8 A, referenced to GND-AUX |
| DC-OK signal |
CN501 pin 5: isolated status output, maximum sourcing current 10 mA; low 0–0.5 V = output voltage healthy, high 4.5–5.5 V = low output voltage |
| Temperature alarm |
CN501 pin 6: isolated status output, maximum sourcing current 10 mA; low 0–0.5 V = internal temperature within limit, high 4.5–5.5 V = temperature alarm |
Both auxiliary supplies include built-in ORing diodes and remain active independently of the main-output remote ON/OFF control. Remote ON/OFF, DC-OK and the temperature-alarm signal use GND-AUX as the isolated reference.
The CN501 pin table specifies a DC-OK switching region of 80% ±6% of nominal output; the separate LED table labels its output-voltage indication as 80% ±5%. Green indicates DC-OK or normal temperature; red indicates low output or a temperature alarm. The temperature-alarm LED table shows output OFF during an overtemperature alarm. Use the detailed signal table when designing a monitoring circuit.
Parallel Operation
| Maximum number of units |
Up to 4 RSP-2000 units with active current sharing |
| Maximum combined output current |
42 A × number of units × 0.9, with all relevant input and temperature derating applied |
| Output-voltage matching |
Difference between parallel units must be less than 0.2 V |
| Minimum load |
Greater than 5% of the total rated output; below this level current sharing may be unbalanced and some units may remain in standby |
| CN502 parallel-control pins |
Pins 1/2 = DA; pins 3/4 = DB; pins 5/6 = GND connected to output −V |
| CN504 termination selector |
Pins 1/2 select the termination resistor for DA/DB parallel-control signals |
Use short, large-diameter output wiring and join matching DA, DB and GND signals between units. Twist longer CN502 control wires in pairs. Follow the parallel-wiring and sensing diagrams in the PDF.
For a single unit, CN502 is unplugged and CN504 termination is fitted. For 2 units, connect CN502 and fit CN504 on both. For 3 or 4 units, connect CN502 on all units and fit CN504 only on the first and last unit. The PDF connection table specifies these configurations; it does not establish that a customer wiring harness is included.
The series headline of up to 8000 W is not an unconditional combined rating for every voltage model. Select the system from the actual per-model current, the 0.9 sharing factor and the operating conditions.
Temperature, Cooling and Environment
| Operating ambient |
−35 to +70°C with derating; horizontal mounting as shown in the curve |
| Temperature curve |
Up to 100% load through +50°C, decreasing to 50% at +70°C; the −35 to −25°C portion is specifically marked for 180–264 VAC |
| Cooling |
Forced air from built-in DC fans with fan-speed control; keep the indicated airflow path clear |
| Operating 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 per cycle, 60 minutes on each X/Y/Z axis |
For operation above 2000 m, the catalog requires an additional ambient-temperature derating of 5°C per 1000 m for this fan-cooled model. This note does not provide a maximum-altitude approval. Use the input and temperature curves together.
Dimensions, Mounting and Connections
| Enclosure dimensions |
295 × 127 × 41 mm (L × W × H); 1U profile; case 952D |
| Drawing tolerance |
±0.5 mm unless otherwise indicated |
| Mounting screws |
M4; hole group 1 maximum penetration 6 mm, group 2 maximum 4 mm; recommended torque 7–10 kgf·cm |
| Input terminal TB1 |
Pin 1 = AC/N; pin 2 = AC/L; pin 3 = FG (frame ground). Maximum terminal torque 18 kgf·cm. |
| DC output terminals |
+V and −V, 2 × M5 as shown; maximum terminal torque 10 kgf·cm |
Use the complete dimensioned drawing for the mounting-hole pattern and terminal orientation. Mounting screw penetration limits are measured into the chassis, not the overall screw length. Connect frame ground and observe output polarity.
Mating Connectors and Options
| CN501 control connector |
On-board HRS DF11-12DP-2DS or equivalent; mating housing HRS DF11-12DS or equivalent |
| CN502 parallel connector |
On-board HRS DF11-6DP-2DSA or equivalent; mating housing HRS DF11-6DS or equivalent |
| Crimp contacts |
The catalog lists HRS DF11-**SC or equivalent; select the complete contact part number for the required wire gauge and connector |
| Conformal coating |
Optional series capability; coating is not established as fitted by this unsuffixed SKU |
Connector references identify the mating parts for the indicated functions. The PDF does not establish that mating housings, contacts, a parallel harness or mounting screws are included with this product. Select the actual parts and wiring from the corresponding connector diagram.
Safety, Insulation and EMC
| Catalog safety approvals |
UL62368-1; CSA C22.2 No. 62368-1; TUV BS EN/EN62368-1; BSMI CNS15598-1; AS/NZS62368.1; EAC TP TC 004. The 48 V model is excluded from the catalog BIS listing. |
| Withstand voltage |
Input–output 3 kVAC; input–FG 2 kVAC; output–FG 0.5 kVAC |
| Isolation resistance |
100 MΩ at 500 VDC, 25°C and 70% RH: input–output, input–FG and output–FG |
| EMC emissions |
BS EN/EN55032 (CISPR32), CNS15936: conducted Class B; radiated Class A. Harmonic current EN61000-3-2; flicker EN61000-3-3. |
| EMC immunity |
BS EN/EN55035; BS EN/EN61000-6-2; BSMI CNS13438 |
Catalog immunity levels: ESD EN61000-4-2, 8 kV air (level 3) and 4 kV contact (level 2); radiated EN61000-4-3 level 3; EFT/burst EN61000-4-4 level 3; surge EN61000-4-5, 4 kV line–earth (level 4) and 2 kV line–line (level 3); conducted EN61000-4-6 level 3; magnetic field EN61000-4-8 level 4. EN61000-4-11: greater than 95% dip for 0.5 periods, 30% dip for 25 periods and greater than 95% interruption for 250 periods.
This is a component power supply for integration into final equipment. Catalog EMC testing used a 720 × 360 × 1 mm metal mounting plate; the finished equipment must be checked again for EMC compliance.
Weight and Catalog Reference
| Reference mass per unit |
1.95 kg = 1950 g, from the catalog PACKING field |
| Catalog MTBF |
487.7k hours minimum, Telcordia SR-332 (Bellcore); 42.9k hours minimum, MIL-HDBK-217F at 25°C |
| Manufacturer catalog warranty listing |
5 years |
| Document version |
RSP-2000-SPEC, 2026-04-24; PDF pages 34–40 |
The mass is a catalog packing reference per unit, not a measured net weight or a shipment weight. MTBF is a statistical reliability figure, not a promised service life. Refer to the PDF for complete drawings, operating curves and installation instructions.
