Siemens 3RH2131-1AK60 Contactor

Siemens 3RH2131-1AK60 is a four-pole auxiliary contactor in the SIRIUS 3RH2 family, sized S00, offering three normally open (NO) contacts and one normally closed (NC) contact for flexible control wiring. The coil is rated for 110 V AC and supports both 50 Hz and 60 Hz mains, enabling compact control of circuits in automation and small-motor start applications. It features screw-terminal wiring for secure connections, an insulation voltage rating up to 690 V, and front-side IP20 protection, making it suitable for indoor control panels and electrical cabinets. The unit weighs about 0.233 kg and is designed for high reliability, with a mechanical service life of up to 30,000,000 switching cycles. RoHS compliant, it adheres to substance restrictions while delivering the robustness typical of Siemens SIRIUS devices. This model combines the 3NO+1NC arrangement with a compact S00 frame, making it well-suited for control circuits, logic interlocks, and auxiliary switching tasks in industrial automation where a compact, dependable relay-like contactor is needed without a full motor-contactor footprint.