Siemens Sirius 3RH2131-2BB40 is a four-pole contactor relay with a 24 V DC coil and a 3 normally open plus 1 normally closed contact configuration, built on a compact S00 frame. It uses spring-loaded terminals for secure, durable connections and is rated for up to 10 A of switching current. This configuration makes it suitable for automation-panel control tasks, where it can switch small inductive loads and implement interlock logic in PLC-driven applications. With the 4-pole 3NO+1NC arrangement and the S00 footprint, it offers flexible wiring in compact installations for reliable control in industrial environments.
