Siemens 3RT2027-1AC20 is a three-pole power contactor in the SIRIUS 3RT family, engineered for AC-3e/AC-3 motor control duty. It is rated for 32 A and is suitable for switching motors up to 15 kW at 400 V, with a 24 V AC coil (50/60 Hz) and a 3-pole configuration. The unit provides one normally open and one normally closed auxiliary contact, wired via screw terminals, and is sized as S0. This compact contactor is designed for use in control panels and automation cabinets, where reliable motor starting and interlocking signals are required, and it sits within Siemens’ 3RT lineup that covers motor switching up to the 250 kW range.
