MEAN WELL DDR-120D-24 Power Supply

The MEAN WELL DDR-120D-24 is an ultra-slim industrial DC-DC DIN-rail converter that accepts a wide input range of 67.2–154 Vdc and provides a single 24 Vdc output at up to 5 A (120 W). Designed for installations where space is limited, this RoHS-compliant adapter features a compact housing measuring 32 mm (W) × 102 mm (D) × 125.2 mm (H) and delivers a stable 24 V supply for control panels and industrial equipment.

Advantages

This MEAN WELL power adapter offers a wide input voltage window suitable for battery-backed and intermediate bus systems, a compact DIN-rail form factor that saves cabinet space, and regulated 24 V output capable of supplying up to 5 A. The unit complies with RoHS requirements and provides a consistent 120 W output in a narrow, rugged industrial package.

Suitable for

• Industrial control cabinets and automation systems
• Telecom and intermediate bus power systems
• Battery-backed or wide-voltage installations
• Space-constrained DIN-rail mounting applications

Key specifications

• Model: MEAN WELL DDR-120D-24 (DDR-120D-24)
• Input voltage: 67.2–154 Vdc
• Output: 24 Vdc, 5 A (single output)
• Maximum output power: 120 W
• Dimensions (W × D × H): 32 × 102 × 125.2 mm
• Compliance: RoHS
• Mounting: DIN-rail

How to use

Mount the DDR-120D-24 on a standard DIN rail and wire the input to a compatible DC source within 67.2–154 Vdc. Connect the 24 Vdc output to the load, observing correct polarity and ensuring the total current draw does not exceed 5 A. Verify proper ventilation and secure wiring according to applicable electrical standards before powering the unit.

Recommendations

For reliable operation, avoid exposing the converter to excessive ambient temperature and ensure sufficient airflow in the enclosure. Use appropriate fusing on the input and output circuits and follow MEAN WELL installation guidelines for DIN-rail devices.