MEAN WELL RT-50B power adapter 50 W input 88-264 V output 12 V

The MEAN WELL RT-50B is an AC-DC enclosed power supply offering triple outputs: +5 Vdc at 4 A, +12 Vdc at 2 A and -12 Vdc at 0.5 A. It accepts a wide input voltage range from 88–264 V AC and delivers a combined output power suitable for equipment that requires multiple low-voltage rails in a compact form factor. The unit measures 97 mm (W) × 99 mm (D) × 36 mm (H) and complies with RoHS environmental requirements.

Advantages

The RT-50B provides stable, regulated outputs across three rails to power mixed-voltage circuits without needing separate supplies. Its wide input range (88–264 V) makes it compatible with international mains voltages. The enclosed metal housing offers protection and compact dimensions save space in equipment racks or enclosures. RoHS compliance ensures the product meets common environmental standards.

Suitable for

• Embedded systems and industrial control boards that need +5 V, +12 V and -12 V rails
• Communication equipment and instrumentation with mixed-voltage requirements
• Prototyping workbenches and small machines requiring a compact multi-rail supply

Key specifications

• Model: MEAN WELL RT-50B (MPN: RT-50B)
• Input voltage: 88–264 V AC
• Outputs: +5 Vdc @ 4 A, +12 Vdc @ 2 A, -12 Vdc @ 0.5 A
• Total output power: 50 W (12 V output rated within this power)
• Dimensions: 97 mm × 99 mm × 36 mm
• Compliance: RoHS
• Brand: MEAN WELL
• EAN: 4021087057387

How to use

Mount the enclosed power supply inside a suitably ventilated equipment enclosure or rack. Connect the AC mains input (88–264 V AC) following local wiring regulations and the product’s polarity markings. Wire the DC outputs to the target circuit ensuring each rail (+5 V, +12 V, -12 V) is connected to the correct supply input and that the combined load does not exceed the rated currents. Observe proper grounding and add fuses or protection devices as required by your application.

Recommendations

Ensure the ambient temperature and ventilation comply with the manufacturer’s guidelines; avoid placing the unit near heat sources. Verify total current draw across all outputs and provide appropriate surge protection on the AC input. For critical applications, consider adding output filtering or additional protection on sensitive circuits.