Siemens 3TB5014-0A Contactor

Siemens 3TB5014-0A Contactor is a three-pole power relay from the 3TB50 family, rated for 135 A, designed to switch 3‑phase loads in industrial equipment. It provides four normally open and four normally closed auxiliary contacts, enabling expanded control wiring options. The coil is specified for 110 V AC at 60 Hz, with a 92 V AC option at 50 Hz to accommodate different mains frequencies. A variant of this model, 3TB5014-0A-G1, is listed by Furnas Electric Co as part of the same family, reflecting a co‑brand or regional variant. Use this contactor to start and stop medium-to-high current 3‑phase motors in panel installations, conveyors, pumps, and similar applications, ensuring the coil voltage, pole count, and auxiliary contact configuration match your control scheme.