Siemens 3RT1056-6AP36 Three Phase AC Contactor

Siemens 3RT1056-6AP36 is a three-pole power contactor in the SIRIUS 3RT family, designed for AC-3e/AC-3 duty and rated to 185 A and 90 kW at 400 V AC (50–60 Hz). The coil control voltage is 220–240 V (AC/DC), compatible with common control circuits, with the main contacts and auxiliary circuit driven through screw terminals and busbar connections in a compact frame size S6. The device features a 3-pole main circuit plus two auxiliary contacts (2 NO + 2 NC), enabling control logic such as interlocks and feedback within the same enclosure. For higher line voltages, listings show 460/575 V AC operation with an approximate 100 HP rating while preserving the 220–240 V coil, making it flexible for various motor-load applications in industrial panels.