Technical Information & Details for the MEAN WELL WDR-120-12 Power Supply
- Output Power: 120 W
- Output Voltage: 12 V DC
- Output Current: 10 A
- Input Voltage Range: 180 – 550 V AC / 254 – 780 V DC, 47 – 63 Hz
- Efficiency: up to 89.5 %
- Ripple & Noise: ≤ 120 mVp-p
- Inrush Current: max. 50 A (Cold Start)
- Operating Temperature: -25 °C to +70 °C
- Cooling: free air convection
- Protection Functions: Short circuit, Overload, Over voltage, Over temperature
- Isolation Voltage: 3000 V AC between input and output
- Dimensions (H x B x T): 125.2 mm x 40 mm x 113.5 mm
- Weight: approx. 650 g
- Safety & EMC Certificates: UL508, IEC62368-1, EAC, BS EN/EN61000-6-2
- DC OK Signal: Relay contact rating 30V/1A resistive
- Manufacturer Warranty: 3 years
Information about the MEAN WELL WDR-120-12
The MEAN WELL WDR-120-12 is a high-performance industrial power supply engineered for specialized electrical environments requiring a wide input range. Unlike standard units, the WDR-120 series can operate on either single-phase or two-phase power systems with an ultra-wide range of 180 to 550V AC. This unique characteristic makes it an indispensable solution for industrial sites where voltage fluctuations are common or where a neutral wire is not readily available. Its slim 40mm design ensures it maximizes space on the DIN rail TS-35/7.5 or 15, providing a robust 120W output without compromising the footprint of the control cabinet.
Reliability is at the core of this power supply, featuring a built-in constant current limiting circuit and a comprehensive suite of protections against short circuits, overvoltage, and overheating. The inclusion of a DC OK relay contact allows for seamless remote monitoring of the output status, ensuring that system failures are detected immediately in automated processes. Designed for heavy industrial immunity levels, the unit functions efficiently through free air convection in temperatures ranging from -25 to +70 degrees Celsius. With UL508 approval and a 100% full load burn-in test, the WDR-120-12 stands as a premium, long-term choice for power-intensive applications in factory automation and telecommunications.