The Siemens 3RH6131-1AN20 is a SIRIUS contactor relay in size S00, carrying 3 normally-open and 1 normally-closed auxiliary contact set. The AC coil draws 37 VA pick-up and 5.7 VA holding, with an inductive power factor of 0.8. Rated operational current at AC-12 is 6 A maximum; at 230 V it carries 10 A, at 400 V it carries 3 A, and at 690 V it carries 1 A. Contact reliability is specified at 1 faulty switching per 100 million operations (17 V, 1 mA), and the typical mechanical life is 30 million switching cycles. Operating frequency at DC-12 and DC-13 is 1 000 1/h maximum.
Dimensions are 45 mm wide, 57.5 mm high, 73 mm deep — the S00 footprint fits alongside a standard contactor on the same DIN rail. Wire range for auxiliary contacts accepts 2x (0.5 to 1.5 mm²) solid or stranded, 2x (0.75 to 2.5 mm²), or 2x 4 mm²; for AWG, 2x (20 to 16), 2x (18 to 14), or 2x 12. Finely stranded wire with core-end processing uses the same cross-sections. The part is RoHS-compliant with a substance prohibitance date of 05/01/2012.