Redundant power supply module 48V 20A DRDN20-48

Redundant module for 48V DC power systems

This DRDN20-48 redundant module from MEAN WELL is a key component in building reliable power systems. Its task is to ensure the continuity of device operation in the event of a failure of one of the power supplies. Thanks to this solution, the system remains fully functional, minimizing the risk of downtime and data loss. The module is designed for mounting on a DIN rail, which facilitates its integration with existing infrastructure.

Construction and application

DRDN20-48 is designed to operate at 48V DC and a current of up to 20A. It uses MOSFET transistors instead of traditional diodes, which translates to higher energy efficiency and lower power losses. This solution makes the system more efficient and generates less heat. The module has relay connections and LEDs that indicate the status of the primary and backup power systems – signaling any failures. The metal housing provides effective cooling in an open air circuit, and the operating temperature range from -40°C to +80°C (with derating above 60°C) guarantees reliable operation even in harsh industrial conditions.

Advantages and benefits

• Power redundancy: Ensures uninterrupted system operation in the event of a failure of one of the power supplies.
• High efficiency: The use of MOSFET transistors minimizes energy losses and increases system efficiency.
• Easy installation: Mounting on a DIN rail TS35 / 7.5 or 15 simplifies integration with the existing installation.
• Status indication: The LED indicates the system's operating status – indicating any power supply problems with the primary or backup system.
• Wide operating temperature range: Operation in the range of -40°C to +80°C (with derating) enables use in demanding environmental conditions.
• Durable construction: The metal housing provides strength and resistance to mechanical damage.
• 3 year warranty: Confirms the high quality of the product and provides peace of mind for the user.
• Compliance with standards: The product meets a number of standards and certificates, which guarantees safety and reliability of operation.

The module is characterized by an output voltage of 48V, a maximum reverse voltage of 60V and a maximum input current of 20A, and its dimensions are 35 x 125.2 x 100 mm.

The DRDN20-48 module is an ideal solution for installers building systems requiring high reliability and for end users who value the continuity of their devices.