The Siemens SIRIUS 3RH1122-2AF00-ZX95 is a size S00 auxiliary contactor with 2 normally-open and 2 normally-closed instantaneous contacts, rated 10 A at 24 V and 10 A in AC-12 duty — that's the resistive-load rating that governs its use in control circuits, not motor switching. The AC-12 rating means it's designed for switching resistive loads like PLC outputs, relay coils, and signal lamps, where inrush is low and contact life matters. Mechanical endurance is specified at 30,000,000 cycles typical, so it's built for high-cycle applications like conveyor interlocks or machine-tool signal chains. Front protection is IP20, so it's for use inside a panel, not in washdown zones.
Installation and wiring
Coordination and ratings
Rated for use at altitudes up to 2,000 m without derating. Shock resistance is 10g / 5 ms and 5g / 10 ms, suitable for industrial environments with moderate vibration.