The Siemens SIRIUS 3RH1131-1AQ00 is an auxiliary contactor in size S00, carrying three normally-open instantaneous contacts and no normally-closed or delayed switching paths. Rated 10 A at 24 V, it handles 6 A at 230 V and 3 A at 400 V (50/60 Hz). The contact block is designed for screw and snap-on mounting onto a contactor or directly onto a DIN rail — the 45 mm width and 57.5 mm height fit the standard S00 footprint alongside the matching 3RT2 power contactors.
Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward or backward, which gives flexibility in crowded panels where the contactor orientation must follow the busbar or duct layout. The front carries IP20 protection — finger-safe for the panel builder but not sealed against dust ingress. Fastening is screw and snap-on; the auxiliary switch can be extended (product extension auxiliary switch = yes) so additional contact blocks stack on the same S00 base without changing the footprint.
Ratings and contact reliability
Contact reliability is one incorrect switching operation per 100 million operations at 17 V, 1 mA. Surge voltage resistance is rated 6 kV.
Wire termination
Terminals accept solid conductors: two wires of 0.5–1.5 mm², two of 0.75–2.5 mm², or a single 4 mm² per clamp. Depth is 72 mm.