Mean Well MDR-20-12 Power Supply | 12V DC, 1.67A, 20W, DIN Rail

Mean Well MDR-20-12 Power Supply | 12V DC, 1.67A, 20W, DIN Rail

Mean Well MDR-20-12 power supply specifications. DIN rail mounted, 20W, 12V DC output, 85-264V AC input, compact design.

Product Overview

The Mean Well MDR-20-12 is a compact, single-output DIN rail mount switching power supply designed for industrial control systems. It converts a universal AC input voltage into a regulated 12V DC output, providing reliable power for sensors, relays, controllers, and other low-voltage devices. Its slim profile and DIN rail mounting make it ideal for space-constrained control panels.

Technical Specifications

Key Features

• Universal AC Input:​ 85-264V AC range for worldwide use

• Compact Design:​ Slim profile saves space on the DIN rail

• High Efficiency:​ Up to 85% efficiency reduces heat generation

• Wide Operating Temperature:​ Reliable performance from -30 to +70°C

• Full Protections:​ Built-in overload, overvoltage, and short circuit protection

• Fanless Operation:​ Silent and maintenance-free

• High Isolation:​ 3 kV AC isolation for safety

• Easy Installation:​ Quick DIN rail mounting and screw terminal connections

Applications

• Power supply for PLCs, sensors, and transmitters in control panels

• Low-voltage power for relays, contactors, and solenoid valves

• General-purpose 12V DC power in industrial automation

• Lighting control systems and small electronic devices

• Machine tools and factory automation

Important Notes

1. The maximum output current is 1.67A; ensure the total load does not exceed 20W.

2. For continuous operation at high ambient temperatures, derating may be required.

3. The unit is designed for convection cooling; ensure adequate airflow in the enclosure.

4. Input and output wiring must comply with local electrical codes and regulations.

5. This is a single-output power supply; for multiple voltages, a different model is required.