SIRIUS auxiliary contactor, Size S00, 24 V DC coil
The Siemens 3RH2122-1BB40-1AA0 is a SIRIUS auxiliary contactor in the compact Size S00 footprint, designed for switching control circuits and signaling loads in industrial panels. The 2 instantaneous contacts handle auxiliary switching tasks such as interlocking, status feedback, or extending the contactor's own signal count via the auxiliary switch extension capability.
Switching performance and environmental limits
Rated switching frequency is 10,000 operating cycles per hour at AC, with arcing time between 10 and 15 ms and a DC switching delay of 7 to 13 ms — figures that matter when coordinating with fast PLC scan cycles or safety circuits.
Lifecycle and sourcing — active production, quoted to order
RoHS compliance is documented with a substance prohibitance date of October 1, 2009, covering the EU RoHS directive scope. Sourced through authorized distribution channels; volume pricing and lead time are confirmed at RFQ against your BOM quantity.