Auxiliary contactor for control-circuit switching
The Siemens SIRIUS 3RH1122-1AP00-0TK1 is a size S00 auxiliary contactor rated for switching control loads in motor starter and PLC output isolation circuits. It carries 2 normally-open and 2 normally-closed instantaneous contacts, with a thermal current rating of 10 A at 24 V and 6 A at 230 V. The 6 kV rated surge voltage resistance gives it margin for industrial control panels where transient suppression is already present on the coil side.
Panel fit and wiring
The 45 mm width and 72 mm depth fit the standard S00 footprint on a DIN rail or screw-fixed panel. Screw and snap-on mounting means it clips onto the rail without tools and can be screw-fastened for vibration-prone installations. The terminal block accepts solid conductors: two wires of 0.5 to 1.5 mm², two of 0.75 to 2.5 mm², or a single 4 mm² per clamp. IP20 on the front face protects against finger contact inside an enclosed panel.
Environmental and compliance
Rated for operation from -25 to +60 °C, with storage and transport tolerance from -55 to +80 °C. Shock resistance is 10g for 5 ms and 5g for 10 ms. The substance prohibition date of July 1, 2006 aligns with RoHS compliance. Pollution degree 3 means it is suitable for industrial environments with conductive or dry non-conductive pollution.