SIRIUS 3RH2122-4AB00 — 24 VAC auxiliary contactor, Size S00
The Siemens 3RH2122-4AB00 is a SIRIUS auxiliary contactor in Size S00, carrying 2 instantaneous normally-open contacts. The coil is wound for 24 VAC at both 50 Hz and 60 Hz, with a rated operational current of 10 A at 24 V and 230 V, tapering to 0.26 A at 600 V and 1 A at 690 V. This is the contact block that signals interlock status, extends control-circuit capacity, or sequences auxiliary loads in a motor starter or contactor assembly.
The S00 footprint — 45 mm wide, 57.5 mm tall, 73 mm deep — fits the compact slot in a SIRIUS motor-starter or contactor assembly.