MEAN WELL MDR-100-12 100W DIN Rail Power Supply 12V 7.5A

The MDR-100-12 stands out among compact DIN rail power supplies by delivering a full 90W from a housing barely wider than a smartphone, without forced-air cooling. Its slim 55mm profile and plastic enclosure keep control cabinets tidy, while the universal AC input and wide DC range make it equally at home on factory floors or in building automation. Unlike open-frame supplies that demand extra guarding, this unit ships ready to clip onto a TS-35 rail and power 12V loads immediately.

Highlights

• 90W continuous output at 12V DC, 7.5A
• Ultra-slim 55mm width saves DIN rail space
• Universal input: 85–264V AC or 120–370V DC
• Free air convection cooling – no fan noise or maintenance
• Full protection: short circuit, overload, over voltage, over temperature
• Green LED confirms output status at a glance

In daily use

Installation takes seconds: snap the unit onto a TS-35/7.5 or TS-35/15 rail, wire the input and output terminals, and the green LED lights up when power is good. The adjustable output (10.8–13.8V) lets you compensate for voltage drop on longer cable runs. With 3kV AC isolation between input and output, the MDR-100-12 safely separates sensitive 12V circuits from mains disturbances. The plastic housing is non-conductive, so no extra insulation is needed even in crowded enclosures.

Full specifications

• Output power: 90W
• Output voltage: 12V DC (adjustable 10.8–13.8V)
• Output current: 7.5A
• Input voltage: 85–264V AC / 120–370V DC
• Input frequency: 47–63Hz
• Efficiency: 88%
• Ripple & noise: 120mVp-p
• Isolation voltage: 3kV AC (input to output)
• Protections: short circuit, overload, over voltage, over temperature
• Operating temperature: -20°C to +70°C
• Cooling: free air convection
• Mounting: DIN rail TS-35/7.5 or TS-35/15
• Housing material: plastic
• LED indicator: green (power on)
• Certifications: UL, CUL, TUV, CB, CE

Final note

For engineers and panel builders who value reliability without bulk, the MDR-100-12 delivers industrial-grade performance in a slim, fanless package that fits almost anywhere.