Original Mean Well DRDN20-24 20A 24V Redundancy Module for DIN Rail Power Supply,Support 1+1&N+1 Backup, MOSFET Low Drop, DC OK & Alarm Relay

Overview In modern industrial control systems, power failure is not an option. The MEAN WELL DRDN20 and DRDN40 series are DIN Rail redundancy modules designed to solve the problem of power supply single points of failure. Whether you are building a high-end security system or a 24/7 production line, these modules create a seamless "hand-off" between your primary and backup power supplies. Key Technical SpecificationsPart Numbers: DRDN20-12/24/48 , DRDN40-12/24/48 Output Current: 20A (DRDN20) / 40A (DRDN40).Input Voltage Range: 12V Nominal: 9 ~ 14Vdc 24V Nominal: 19 ~ 29Vdc 48V Nominal: 36 ~ 60Vdc Dimensions: DRDN20 (102 x 32 x 125mm) / DRDN40 (100 x 55 x 125mm) Why Upgrade to DRDN?Replaces Old Technology: Successor to the old DR-RDN20 series, offering better power dissipation and accuracy.Dual Input to Single Output: Simplifies wiring for parallel power configurations.Safety Certifications: Compliant with UL62368-1, CB, and EAC standards, ensuring safe operation in industrial electrical panels.Installation TipFor optimal performance, mount the unit vertically (input terminals facing down) on a TS35 rail. Maintain 40mm clearance above and below for air convection. Recommended torque for DRDN40 terminals: 20.21 kgf-cm

• Prevents System Shutdowns: Supports 1+1 and N+1 redundancy systems. By connecting two or more power supplies in parallel, the DRDN series ensures your critical load continues operating even if one power supply fails. Ideal for semiconductor equipment and factory automation where downtime is not an option
• High Efficiency & Low Heat: Unlike traditional diode-based OR-ing modules, the DRDN series adopts advanced MOSFET technology. This significantly reduces heat generation and minimizes the voltage drop between input and output, improving overall system efficiency and component lifespan
• Real-Time Status Monitoring: Comes with built-in 2-channel DC OK LED indicators and Relay Contact (Alarm) signals. You can easily monitor the status of each backup power supply remotely or on-site, allowing for predictive maintenance and immediate fault detection
• -40°C to +80°C Ultra-Wide Operating Temp: Engineered for harsh industrial environments. Whether it's a cold storage facility or a high-temperature factory floor, the DRDN series operates reliably. Uses free air convection cooling, no noisy fans required
• Easy DIN Rail Mounting: The DRDN20 (32mm width) and DRDN40 (55mm width) are designed for TS35 standard DIN rails. The compact housing saves valuable cabinet space, and the vertical mounting orientation ensures optimal cooling airflow (keep 40mm clearance top/bottom)