The Siemens 3RH1122-1BK80 is a SIRIUS auxiliary contactor in size S00, designed for switching auxiliary circuits in control panels. It carries a 52 V DC coil and provides 2 normally open instantaneous contacts. Rated operational current is 10 A at 24 V, derating to 6 A at 230 V and 1 A at 690 V. The contactor is rated for 30 million switching cycles typical, with contact reliability of one incorrect operation per 100 million at 17 V, 1 mA. The coil draws 3.2 W DC for both closing and holding, and the part is rated for surge voltage resistance of 6 kV. Pollution degree 3 applies per the datasheet.
Mounting and Integration
Mounts via screw fixing or snap-on onto a DIN rail. The 45 mm width and 57.5 mm height fit the standard S00 footprint. Depth is 72 mm, which is the dimension to account for when spacing against the gland plate or adjacent devices. Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward. The front face carries IP20 protection; the enclosure is rated for -25 to +60 °C during operation. Terminal capacity accepts solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12.
Lifecycle and Compliance
Storage and transport temperature range is -55 to +80 °C. Shock resistance is rated at 10g for 5 ms and 5g for 10 ms.