Siemens 3RT2017-1AK61 Three Phase Industrial Contactor

Siemens 3RT2017-1AK61 is a three-pole Sirius power contactor designed for AC-3 and AC-3e motor-starting applications. It carries a 12 A continuous current rating and a 5.5 kW load capacity at 400 V, making it suitable for small- to mid-sized three-phase motors. The coil voltage is available as 110 V AC (50/60 Hz) or 120 V AC (60 Hz), allowing integration with common control circuits. The device includes one normally open auxiliary contact for signaling or interlocking and uses screw-terminal connections for secure wiring. Housed in the compact size class S00, it fits neatly into panel assemblies and OEM cabinets. As part of the Siemens Sirius 3RT20 family, the 3RT2017-1AK61 provides robust switching performance in demanding industrial environments, with typical applications such as conveyors, pumps, fans, and machine tools where a 3-phase load up to 12 A at 400 V is controlled. The specification aligns with AC-3e/AC-3 duty, ensuring reliable motor control when paired with appropriate overload protection and control wiring in standard 400 V systems.