The Siemens SIRIUS 3RH2422-1AF00 is an auxiliary contactor with 2 normally open instantaneous contacts, rated for 10 A at both 24 V and 230 V AC. It mounts via screw or snap-on onto a standard 35 mm DIN rail, size S00, fitting into compact control panels where space is tight — the 57.5 mm height and 73 mm depth leave room for gland plates and adjacent devices.
Side clearance of 6 mm and vertical spacing of 10 mm (up/down/forward) keep derating in check when packing multiple contactors side by side.
The 10 A rating at 24 V and 230 V AC covers typical control-circuit loads — relay coils, contactor coils, indicator lamps. At higher voltages the current drops: 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 0.5 A at 440 V, and 0.26 A at 600 V. The arcing time of 10–15 ms and mechanical life of 5 million operations mean it holds up in high-cycle applications like conveyor interlocking or machine-tool sequences.