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Enclosed metal power supply unit with dual output terminals and ventilation slots

Mean Well

Mean Well RD-125A 130.9W Dual Output Power Supply

SKU CH-RN87-D7QR9

Dual-output AT switching supply delivering 5 V and 12 V at 7.7 A each for 130.9 W total, rated to 70 °C with 105 °C capacitors and 300 VAC surge tolerance

  • TypeAT
  • Dual 5 V and 12 V rails deliver 130.9 W total power
  • Each rail supplies up to 7.7 A for balanced load sharing
  • Operates reliably up to 70 °C ambient temperature
  • Built with 105 °C rated electrolytic capacitors for extended service life
  • Withstands 300 VAC surge input for 5 seconds and 5G vibration

Industrial dual-output PSU

The Mean Well RD-125A is a 130.9 W enclosed switching power supply delivering two fixed rails at 5 V and 12 V, each rated for 7.7 A. It is built for industrial equipment, automation cabinets and test rigs that need reliable DC power in harsh conditions.

AT form-factor integration

The unit follows an AT-type layout and fits into standard industrial chassis or DIN-rail trays without modification. Its 105 °C electrolytic capacitors and 300 VAC surge tolerance for five seconds free the designer from adding external protection circuitry in unstable mains environments.

Suited for vibration-prone installations

Engineers specifying equipment that must survive 5 G vibration and 70 °C ambient temperatures will find the ratings match those demands. Buyers who need adjustable voltages, higher total wattage or single-rail output should consider other models.

Highlights

  • Dual 5 V and 12 V rails deliver 130.9 W total power
  • Each rail supplies up to 7.7 A for balanced load sharing
  • Operates reliably up to 70 °C ambient temperature
  • Built with 105 °C rated electrolytic capacitors for extended service life
  • Withstands 300 VAC surge input for 5 seconds and 5G vibration

Specifications

TypeAT

Questions about this item

What limits the RD-125A during sustained high-load operation?

The 130.9 W total output and the 7.7 A per-channel current caps are the first limits reached under continuous load.

How much heat and noise should I expect when the unit runs all day?

The supply is rated for 70 °C ambient operation with 105 °C electrolytic capacitors and has no fan, so it runs silently while dissipating heat through its enclosure.

What AC input must already be available for the RD-125A to work?

A standard AC mains connection is required; the unit accepts up to 300 VAC surge for five seconds and operates from typical single-phase supply.

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