Proof Relays

Littelfuse proof relays are used to verify that current is flowing as intended and are the ideal solution for monitoring and processing input parameters. These high-quality products interpret incoming data and provide the appropriate output response such as visual indication, setting change, or warning alarms. The Littelfuse proof relays are typically used to interlock fans, compressors, motors, heating elements, and other devices. The LSR and LSRX relays are self-powered load sensors.