Siemens 3RT1036-1AP60 SIRIUS Power Contactor
It carries a 30 kW rating at 500 V in AC-3 duty, meaning it handles the inrush and breaking of squirrel-cage motors up to that power level. The AC-2 rating of 22 kW at 400 V covers slip-ring motor applications where the switching frequency is lower but the load current is sustained. The 55 mm width and 112 mm height fit standard panel layouts; depth is 115 mm, which clears most enclosure depths without interfering with gland plates or busbar runs.
Ratings and Switching Performance
The contactor is rated for 50/60 Hz operation with an operating range of 0.8 to 1.1 times the rated voltage at both frequencies. Maximum switching rates vary by duty: 1000 cycles per hour in AC-1 (resistive loads), 800 in AC-3 (motor starting), 400 in AC-2 (slip-ring motors), and 300 in AC-4 (plugging/inching). Auxiliary contact ratings cover common control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC. These handle direct PLC outputs or relay interface modules without intermediate contactors for most signal loads.