Siemens Sirius 3RT1066-6AF36 is a three-pole power contactor designed for AC-3 duty, rated for 300 A and capable of switching up to 160 kW at 400 V (50–60 Hz). It uses a 110–127 V coil (AC or DC) and provides 2 normally open plus 2 normally closed auxiliary contacts for signaling and interlocking. The unit is a size S10 frame and features conventional operating mechanism with main-circuit busbar connections and screw-terminal auxiliary circuits, suitable for control panels and motor-start applications.
