Power Supply Unit MEAN WELL SDR-75-48 77W Metallic

The MEAN WELL SDR-75-48 77W Metallic is a compact DIN-rail power supply designed for industrial and control applications. It accepts a wide AC input range of 88–264 V at 47–63 Hz, delivers 77 W output power, and is built with a metallic enclosure. The unit meets EN60950-1 and UL508 safety standards and offers high reliability with an MTBF of 481,900 hours. Its slim dimensions (32 mm × 102 mm × 125.2 mm) allow easy installation on TS-35/7.5 or TS-35/15 DIN rails.

Advantages

The SDR-75-48 provides high conversion efficiency (around 90%) and low power dissipation, supports 150% peak load capability for short-duration surges, and is cooled by free air convection so no fan is required. It undergoes a 100% full-load burn-in test for quality assurance. The metallic housing contributes to mechanical robustness and electromagnetic compatibility.

Suitable for

• Industrial control cabinets and automation systems
• PLC, relay and I/O modules power supply
• DIN-rail mounted equipment in machinery and building management

Key specifications

• Output power: 77 W
• Model: MEAN WELL SDR-75-48 (MPN: SDR-75-48)
• Input: AC 88–264 V, 47–63 Hz
• Efficiency: ~90%
• Peak load capability: 150%
• Cooling: free air convection (no fan)
• Mounting: DIN rail TS-35/7.5 or TS-35/15
• Safety standards: EN60950-1, UL508
• MTBF: 481,900 hours
• Dimensions (W×D×H): 32 mm × 102 mm × 125.2 mm
• EAN: 4021087017855

How to use

Mount the unit on a TS-35/7.5 or TS-35/15 DIN rail and secure it according to the manufacturer’s instructions. Connect the AC input within the specified 88–264 V range and observe correct polarity and grounding. Verify output voltage and load connections before applying full load. Ensure adequate spacing around the unit for natural convection cooling and follow local wiring regulations and safety practices during installation.

Recommendations

Install in a dry, ventilated enclosure with ambient temperature and ventilation consistent with the device datasheet. Avoid blocking airflow, limit exposure to corrosive environments, and ensure the wiring and protective devices are rated for the specified input and output currents.