Siemens 3RT2016-1AK61 Industrial Magnetic Contactor

Siemens 3RT2016-1AK61 is a SIRIUS 3RT power contactor designed for AC-3e/AC-3 duty in a 3‑pole configuration. It switches 3‑phase loads up to 4 kW at 400 V and carries a main‑circuit rating of 9 A, making it suitable for controlling motors and other inductive loads in industrial equipment. The coil is rated for 110 V AC at 50 Hz or 120 V AC at 60 Hz, providing regional coil voltage compatibility, and the unit includes one normally open auxiliary contact for signaling or interlocking. Terminals are screw connections, and the device is specified in the compact size class S00, with a weight of about 0.230 kg. This model is part of Siemens’ SIRIUS 3RT contactor family, commonly used to start and stop motors, pumps, conveyors, and fans in control panels, delivering reliable switching for 400 V systems in a compact form factor.