MEAN WELL MDR-20-12 AC 12V 1.67A 20W DIN Rail Power Supply

Description

The MEAN WELL MDR-20-12 is a high-efficiency 20W ultra-slim DIN rail power supply engineered for precision industrial automation and control systems. This unit is designed to optimize cabinet space with a 22.5mm width while maintaining high Technical Compatibility with standard TS-35/7.5 or 15 mounting rails. Utilizing Original Engineering, the MDR-20-12 features a low no-load power consumption of less than 0.75W, ensuring energy efficiency in standby modes. The integrated DC OK relay contact provides active monitoring capabilities for system status integration.

Technical Specifications:
Manufacturer: MEAN WELL
Model: MDR-20-12
Output Voltage: 12V DC
Output Current: 1.67A
Rated Power: 20W
Input Voltage Range: 85-264V AC / 120-370V DC
Input Frequency: 47-63Hz
Input Current: 0.55A/115V AC 0.35A/230V AC
Efficiency: 80%
Inrush Current: Cold start 20A/115V AC 40A/230V AC
Leakage Current: <1mA / 240V AC
Overload Protection: 105-160% rated output power (Constant current limiting, auto-recovery)
Overvoltage Protection: 13.8-16.2V (Shut down o/p voltage, re-power on to recover)
Operating Temperature: -20 to +70°C
Working Humidity: 20-90% RH non-condensing
Storage Temperature: -40 to +85°C
Temperature Coefficient: ±0.03%/°C (0-50°C)
Vibration: 10-500Hz, 2G 10min/1cycle, period for 60min each along X, Y, Z axes
Safety Standards: UL508, TUV EN62368-1 approved
Withstand Voltage: I/P-O/P: 3KV AC, I/P-FG: 2KV AC, O/P-FG: 0.5KV AC
Isolation Resistance: I/P-O/P, I/P-FG, O/P-FG: 100M Ohms / 500V DC / 25°C / 70% RH
EMC Emission: Compliance to EN55032 Class B, EN61000-3-2, -3
EMC Immunity: Compliance to EN61000-4-2, 3, 4, 5, 6, 8, 11
MTBF: 236.9K hours min. MIL-HDBK-217F (25°C)
Dimensions: 22.5 x 90 x 100 mm (W x H x D)
Weight: 0.19 kg
Cooling Method: Natural air convection
DC OK Signal: Relay contact rating 30V DC / 1A

Application Scenario:
The MDR-20-12 is specifically utilized in high-density control panels for building automation and small-scale PLC deployments. Its ultra-slim profile solves the critical problem of limited rail space in retrofitted industrial enclosures. The inclusion of the DC OK relay contact allows for seamless integration into remote monitoring circuits, ensuring minimal Lead Time for fault detection and maintenance in mission-critical environments.

Key Attributes
Cooling Method: Natural air cooling
Input Voltage: 85-264VAC 120-370VDC
Output Current: 1.67A
Output Voltage: 12 V
Place of Origin: Guangdong, China
Model Number: L2-MDR-20-12
Brand Name: MEAN WELL
Output Frequency: 47~ 63Hz
Output Type: Single
Output Power: 20W
Input AC Current: 0.55A/115VAC 0.35A/230VAC
Operating temperature: -20 ~ +70℃

Packaging and Delivery
Selling Units: Single item
Single package size: 10X3X9 cm
Single gross weight: 0.220 kg