MEAN WELL DRC-40A 40W DIN Rail DC UPS Module with Battery Charger for 24V Systems

Deliver continuous 24V DC power with the MEAN WELL DRC-40A, a compact DIN rail UPS module that seamlessly combines a 40W DC UPS, battery charger, and battery protection in one unit. With a continuous output current of 1.5A and support for 24V lead-acid batteries, it ensures your critical loads stay operational during mains interruptions.

Overview

The DRC-40A operates from a 24V DC input (typically from an external power supply) and provides a regulated 24V DC output. In normal operation, it passes through the input voltage while simultaneously charging the connected battery using a constant current/constant voltage (CC/CV) method. When the input fails, the module instantly switches to battery power, delivering up to 1.5A to the load. Built-in protections include short circuit, overload, over voltage, battery reverse polarity, and battery low disconnect, safeguarding both the module and the battery.

What stands out

• All-in-one DC UPS, charger, and battery protection in a compact DIN rail housing.
• Supports 24V lead-acid batteries with a maximum charging current of 1.5A.
• Relay alarm signals for DC OK, battery fail, and battery discharge for remote monitoring.
• Wide operating temperature range from -20°C to +70°C with free air convection cooling.
• High efficiency of over 85% reduces heat and energy consumption.
• Compliance with UL, cUL, TUV, CB, and CE ensures global acceptance.

Technical details

• Input voltage: 24V DC (from external power supply)
• Output voltage: 24V DC
• Max output current: 1.5A (continuous in UPS mode)
• Max output power: 40W
• Battery type: 24V lead-acid (or compatible)
• Max charging current: 1.5A
• Charging method: Constant current / constant voltage (CC/CV)
• Mounting: DIN rail TS-35/7.5 or TS-35/15
• Protections: Short circuit, overload, over voltage, battery reverse polarity, battery low disconnect
• Alarm signals: Relay contact for DC OK, battery fail, battery discharge
• Operating temperature: -20°C to +70°C
• Cooling: Free air convection
• Efficiency: >85% typical
• Compliance: UL/cUL/TUV/CB/CE

Our verdict

The MEAN WELL DRC-40A is a reliable and compact solution for adding battery backup to 24V DC systems. Its integration of UPS, charger, and protection functions simplifies installation and enhances system reliability, making it ideal for industrial automation, security systems, and other critical DC applications.