Siemens 3RT1016-1BB41 Three-Phase Power Contactor

Siemens 3RT1016-1BB41 is a three-pole power contactor (AC-3 duty) with three normally open main contacts and a 24 V DC coil, rated for about 9 A in AC-3 service to drive a 4 kW, 400 V motor. It is supplied as a motor-protection kit paired with the 3RU1116-1HB0 overload relay (size S00, Class 10) for overload protection in the 5.5–8 A range, featuring screw-terminal main and auxiliary circuits and a manual/automatic reset option on the relay. This compact, size-S00 assembly is ideal for switching 3‑phase motors in conveyors, pumps, and machine tools, delivering reliable start/stop control paired with tuned overload protection when used with the matching overload relay.