Siemens Sirius 3RT1055-6AF36 is a three‑pole power contactor designed for AC-3e/AC-3 motor control up to 150 A and 75 kW at 400 V, with a coil voltage of 110–127 V (AC/DC). It provides 2 normally open and 2 normally closed auxiliary contacts, enabling integrated control and feedback circuits, and the main circuit is configured for conventional busbar control with screw-terminal connections for both main and auxiliary circuitry. Sized in the S6 frame, this device is part of the Sirius 3RT family and is intended for reliable, high‑current switching in industrial motor starters and automation installations.
