Siemens 3TB50-17-0AMO is a three-pole motor-contactor designed for three-phase power switching. It uses a 220–264 V AC coil and is rated for a continuous load current of 160 A (Ie). The device is part of the 3TB50 family and carries a rated insulation voltage Ui up to 690 V, making it suitable for AC-1 motor control and other inductive loads in industrial equipment. Typical uses include starting and stopping three-phase motors in fans, pumps, compressors, conveyors, and machine tools where a compact, high-current contactor is needed.
