Siemens 3RT2018-1AK62 is a 3‑pole SIRIUS power contactor designed for AC‑3 motor switching, with a main circuit rated up to 690 V and a typical 7.5 kW load at 400 V (about 8.9 A). The coil is 110 VAC (50 Hz) / 120 VAC (60 Hz), enabling use with common control circuits, and the unit includes one normally closed auxiliary contact for signaling or interlock functions. Its compact footprint—58 mm high, 45 mm wide, 73 mm deep—mounts on a 35 mm DIN rail (DIN EN 60715) and can be mounted side‑by‑side with other devices.
