The Siemens SIRIUS 3RH2122-2AK60 is an auxiliary contactor in size S00, carrying 2 NO instantaneous contacts. It mounts via screw or snap-on onto a standard 35 mm mounting rail, with a ±180° rotation possible on a vertical surface and ±22.5° tilt forward/backward. Rated for 10 A at 24 V, it handles control-circuit switching across a range of voltages: 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 10 A at 230 V, 3 A at 400 V, 0.5 A at 440 V, 2 A at 500 V, 0.26 A at 600 V, and 1 A at 690 V.
The contactor occupies a 45 mm width on the rail, with a depth of 73 mm and height of 70 mm. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side. Accepts 2x (0.5 to 4 mm²) solid or stranded conductors. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. Pollution degree 3 suits industrial environments with conductive pollution.
Compliance includes RoHS with a substance prohibition date of 10/01/2009. The arcing time is 10 to 15 ms, and the mechanical service life of the contactor is typical 30,000,000 operations.