SIRIUS S00 power contactor for motor switching
The Siemens 3RT1016-2AK61 is a SIRIUS S00 power contactor rated for motor duty at 4 kW in AC-2 service, and 5.5 kW. It uses spring-loaded terminals for the main circuit, accepting 2x (0.25 to 2.5 mm²) solid or stranded conductors, with the terminal block itself rated IP20.
Motor ratings and coordination
Beyond AC-2, the contactor is rated 8.5 A in AC-4 for plugging or inching duty. For type 2 coordination, the required upstream fuse is gL/gG 20 A; type 1 coordination allows a 35 A fuse. The auxiliary contact block carries a 24 V rated value of 10 A, stepping down to 0.3 A and 6 A — these are the switching limits for the control circuit, not the main poles.
