The Siemens SIRIUS 3RT1036-1CP06-0KV0 is a size S2 power contactor rated 22 kW at 400 V in AC-2 duty, meaning it handles wound-rotor motor switching and reversing applications where the load current stays below 41 A at 400 V AC-4. The coil pulls 10 A at 24 V rated, drops to 0.3 A at 220 V — the rated control voltage range at 50 Hz is 0.8 to 1.1 times nominal, which gives you headroom on a weak supply bus.
The 75 mm width and 112 mm height fit a standard panel grid, and side-by-side mounting is supported with no derating penalty in the spec. IP20 on the front, IP00 at the terminals — so it's protected against finger contact in the enclosure but the wiring zone is open, which is normal for a panel-mounted contactor. Ambient operating range is -25 to +60 °C, storage -55 to +80 °C; pollution degree 3 means it tolerates conductive dust and humidity typical of industrial control cabinets.