Siemens 3RT2038-1AK60 Power Contactor

Siemens 3RT2038-1AK60 Sirius power contactor is a three-pole motor switch designed for AC-3e/AC-3 duty, rated for up to 80 A and 37 kW at 400 V, making it suitable for starting and stopping three-phase motors in compact, panel-ready installations (S2 size) with screw-terminal connections. The unit integrates an auxiliary contact pair—1 normally open and 1 normally closed—for signaling or interlocking, and uses screw terminals for secure wiring within the compact S2 size. Coil voltage is 110 V AC (50 Hz) or 120 V AC (60 Hz), enabling operation from standard control mains without an adaptor. This contactor is appropriate for motor-start applications such as pumps, conveyors, and fans, delivering dependable switching of three-phase loads up to 80 A at 400 V while supporting control logic via the auxiliary contact.