Siemens 3RH1131-2BB40 Contactor

Siemens 3RH1131-2BB40 Contactor Relay is a compact 4-pole device in the S00 frame, delivering three normally open contacts and one normally closed contact, driven by a 24 V DC coil, ideal for control circuits in automation and machinery. It supports diverse wiring options with spring-loaded terminals or CAGE CLAMP connections, enabling secure and reliable terminations in panel mounts or distributed control applications. Electrical ratings include insulation voltage up to 690 V and front IP20 protection in typical configurations, aligning with Siemens' Sirius 3RH11 family specifications for control relays and auxiliary contactors. As part of Siemens' current lineup, the 3RH1131-2BB40 is documented with a successor, the 3RH2131-2BB40, reflecting ongoing product evolution within the 3RH2/3RH11 series.