Siemens 3RT2036-1AC20 Three Phase Industrial Contactor

Siemens 3RT2036-1AC20 is a SIRIUS 3RT2 three-pole power contactor designed for AC-3e/AC-3 duty in 400 V systems. It is rated for a continuous current of 51 A and can switch up to 22 kW at 400 V. The coil is 24 V AC at 50/60 Hz, suitable for standard control circuits in factory automation. The unit includes one normally open (NO) and one normally closed (NC) auxiliary contact, with screw-terminal connections for secure wiring, and it comes in the compact S2 size. With three main contacts and an auxiliary contact arrangement, it supports motor control applications such as starting and stopping three‑phase motors, conveyors, and pumps in industrial panels. The 3RT2036-1AC20 is designed to operate on 400 V AC supplies and 50/60 Hz control systems, aligning with common European industrial electrical infrastructure. This contactor is part of Siemens' SIRIUS 3RT2 family, offering a reliable, ready-to-use solution for mid‑range power switching in automated environments.