The Siemens 3RH1122-1HB40 is a high-performance SIRIUS contactor relay designed for reliable switching of control circuits. Part of the SIRIUS modular system, this compact size S00 relay offers exceptional durability and performance in a variety of industrial automation and control applications. It features two normally open (NO) and two normally closed (NC) contacts, making it versatile for interlocking and control signal tasks. The 24V DC coil is suitable for standard control voltage systems, and the user-friendly screw-type terminals ensure secure and straightforward wiring. Its climate-proof design and wide operating temperature range guarantee dependable operation even in demanding industrial environments.