Siemens 3RH1131-1AK60 Auxiliary Contactor 110 120 VAC

Siemens 3RH1131-1AK60 is a Sirius auxiliary contactor with a 4-pole arrangement that provides 3 normally open and 1 normally closed auxiliary contacts, driven by a control coil rated for 110 V AC at 50 Hz or 120 V AC at 60 Hz. The unit is size S00 with screw-terminal connections, and it carries an insulation voltage of up to 690 V with front IP20 protection and a pollution degree of 3. It offers a high mechanical life—up to about 30 million switching cycles—with surge immunity rated at 6 kV and shock resistance of 10 g/5 ms, and it operates in ambient temperatures from -25 to +60 C. This auxiliary contact block is designed for control-circuit signaling, interlocking, and feedback in Siemens automation panels while the main power is switched by a separate contactor.