The Siemens 3RH1131-2AF00-0TK0 is a SIRIUS auxiliary contactor in size S00, carrying 3 normally-open and 1 normally-closed instantaneous contacts. It's the switching element for control circuits — pilot lights, PLC inputs, contactor coils — not a main power contactor. Rated for 10 A at 24 V and 6 A at 230 V, with a 6 kV surge voltage resistance, it handles the typical 24 VDC or 230 VAC control voltages found in a panel.
Mounts via screw or snap-on to DIN rail — the fastening method covers both permanent and clip-in installs. Depth of 73 mm and height of 60 mm keep the footprint compact — that's another SKU that fits a crowded DIN rail without a fight.
Contact ratings and switching reliability
The contact ratings are given at multiple voltage levels: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These are the maximum continuous currents at those voltages — the actual load current must stay under the curve for the applied voltage. For a 24 VDC pilot circuit, the 10 A rating leaves headroom for multiple loads. At 230 VAC, 6 A covers most contactor coils and indicator banks. Contact reliability is specified as one incorrect switching operation per 100 million cycles at 17 V, 1 mA — that's the dry-circuit performance for low-energy signals like PLC inputs. Shock resistance of 10g at 5 ms and 5g at 10 ms means it holds contact through moderate vibration on a machine frame.
The storage limit is wider because the part isn't energized — that's the handling limit, not the running limit. The 50/60 Hz frequency ratings (0.8-1.1 at 50 Hz, 0.85-1.1 at 60 Hz) are the thermal overload factors for the coil; the contactor itself is frequency-agnostic for the load contacts.