Power Supply Unit MEAN WELL SDR-960-48

The MEAN WELL SDR-960-48 is a 960 W industrial DIN-rail power supply with AC input 180–264 VAC and built-in active PFC. It delivers a rated output of 48 V DC and supports 130% peak load capability (maximum peak power 1,248 W). The unit features a compact 110 mm slim design, low power dissipation with up to 94% efficiency, and a long MTBF of 69,800 hours. It is approved to UL508 and complies with EN60950-1 and EN61000-6-2 immunity standards for industrial environments.

Advantages

The SDR-960-48 provides high efficiency and low heat generation, a built-in constant current limiting circuit and comprehensive protections including short-circuit, overload, over-voltage and over-temperature. It supports current sharing for parallel operation up to 3,840 W (3+1) and includes a built-in DC OK relay contact. Installation is simplified by DIN rail TS-35/7.5 or 15 mounting and the unit has passed 100% full-load burn-in testing.

Suitable for

• Industrial control cabinets and automation systems
• DIN-rail power installations requiring 48 V DC
• Applications demanding high reliability and electromagnetic immunity

Key specifications

• Brand: MEAN WELL
• Model: SDR-960-48
• Output power: 960 W (peak 1,248 W at 130% load)
• Output voltage: 48 V DC
• AC input: 180–264 VAC
• Efficiency: up to 94%
• Protections: Short circuit / Overload / Over voltage / Over temperature
• Cooling: Convection (fanless)
• Mounting: DIN rail TS-35/7.5 or 15
• Approvals and standards: UL508, EN60950-1, EN61000-6-2
• Dimensions (W×D×H): 110 × 150 × 125.2 mm
• MTBF: 69,800 hours

How to use

Mount the SDR-960-48 on a TS-35/7.5 or TS-35/15 DIN rail and connect the AC input (180–264 VAC) according to local wiring regulations. Connect the 48 V DC output to the load, observing correct polarity. For higher total power, parallel up to four units with current sharing (3+1 configuration) following the manufacturer’s wiring instructions. Use the built-in DC OK relay for remote monitoring of output status. Ensure adequate ventilation around the unit to maintain specified efficiency and temperature limits.

Recommendations

Install the unit in an environment that meets industrial immunity requirements, avoid placing it near strong heat sources, and perform routine inspections of connections. Follow local electrical codes and the manufacturer’s installation manual for safe and reliable operation.