Industrial SRB 301LC-24V Relay

The Schmersal SRB301LC-24V is a DIN-rail mounted safety relay module designed to process signals from non-potential-contact safety circuits. It provides three normally open safety outputs and one auxiliary output, enabling compact safety interlock and emergency-stop wiring without extra relays. The unit is powered from 24 V AC/DC, is 22.5 mm wide, and uses a reinforced thermoplastic housing with IP20 protection for industrial panels. It includes an automatic reset function, a built-in status indicator with four LEDs, and fault detection for wire breaks, short circuits, and ground faults, with screw terminals for secure field wiring. As part of the SRB family, the SRB301LC-24V supports safety applications up to Safety Category 4 under applicable EN standards. The 24 V coil variant and DIN-rail mounting make it compatible with a wide range of automated machinery and guarding schemes, while its compact width helps maximize panel density. This specific model is listed as discontinued by the manufacturer.