Siemens 3RT1017-1KB41 Three-Phase AC Contactor

Siemens 3RT1017-1KB41 is a three-pole Sirius power contactor in frame size S00, designed for AC-3 duty and rated to switch motor loads up to 5.5 kW at 400 V with a 24 V DC control coil. It provides three main contacts and one integrated normally open auxiliary contact, with screw-terminal connections for reliable wiring. The coil operates from 24 V DC and accepts a control input in the range of 0.7 to 1.25 times Us; an integrated surge-suppression device (varistor) protects the coil and downstream circuitry from voltage spikes. Rated Ie up to 12 A and compact for panel installation, this 3RT1017-1KB41 is suitable for PLC-controlled start/stop applications in small to mid-size machines such as pumps, fans, conveyors, and other driven loads.