Redundant power supply module 48V 20A ERDN20-48

Redundant Power Module – Increased System Reliability

The ERDN20-48 module is a key element in building reliable power systems. Its task is to ensure continuity of operation, even in the event of a failure of one of the power supplies. Thanks to support for 1+1 and N+1 systems, this module allows you to configure redundancy, minimizing the risk of downtime. This solution is ideal for applications where continuous operation is critical – from monitoring and industrial automation systems to advanced telecommunications installations.

Construction and application

The ERDN20-48 module is designed to work with 48V DC power supplies with a current of up to 20A. It allows you to connect two power sources (2 input channels) to one output, automatically switching to the backup power supply in the event of a problem with the main source. The MOSFET technology used minimizes energy losses and limits the voltage difference between input and output, resulting in higher system efficiency. Built-in monitoring functions – DC OK signals and alarm relays – allow you to continuously monitor the power status and react quickly in the event of a failure.

Key features and benefits

• 1+1 and N+1 Redundancy: the ability to configure the system according to needs, ensuring high power availability. A 1+1 system means one main and one backup source, while N+1 allows you to connect multiple sources with one backup.
• Wide input voltage range: the module supports 48V DC voltage, ensuring compatibility with popular power supplies.
• High efficiency: MOSFET technology minimizes energy losses during switching between power sources.
• Built-in monitoring functions: DC OK signals and alarm relays enable remote monitoring of the power status and quick failure detection.
• Wide operating temperature range: the ability to operate in the range of -40°C to +80°C (with derating above +60°C) makes the module suitable for use in harsh environmental conditions.
• Compact dimensions: a housing with dimensions of 82 x 99 x 36 mm (width x length x height) makes it easy to mount in a limited space.
• 3-year warranty: provides peace of mind and confidence in product reliability.

Thanks to these features, the ERDN20-48 module is a reliable solution for anyone who values the continuity of their systems. Both installers and end users can count on its high quality and ease of integration with existing infrastructure.