ABB 2TLA010051R0000 Safety Relay

ABB 2TLA010051R0000 Safety Relay, known in ABB’s line as the SENTRY SSR20, is a DIN-rail mounted safety relay module with four switching contacts: three normally open and one normally closed. It operates from a +24 V DC coil and uses screw terminals for straightforward wiring, making it a compact, dedicated safety interface for machine control circuits. Designed for IP20 protection and DIN-rail installation, the SSR20 is intended to drive safety devices such as interlocks, guard switches, and safety relays within industrial automation, delivering reliable, discrete safety switching in a single module. This model offers a simple, rugged solution for implementing safety functions in automation environments, providing the essential four-contact configuration in a compact footprint without relying on a full safety controller.