SIRIUS auxiliary contactor, size S00, 2 NO
The Siemens SIRIUS 3RH1122-1AP00-0TK0 is an auxiliary contactor in the S00 frame size, providing two normally-open (NO) instantaneous contacts with no delayed or lagging switching elements. It is designed for control-circuit switching and signal feedback in motor starter and contactor assemblies, and mounts via screw or snap-on onto a DIN rail within a control panel. Rated for a surge voltage resistance of 6 kV and pollution degree 3, it suits industrial environments where transient overvoltages and conductive dust are present. The IP20 front protection means the contactor is safe against finger contact from the front, but requires enclosure for washdown or outdoor use. Mechanical life is rated at 30 million operations typical, with a contact reliability of one incorrect switching operation per 100 million operations at 17 V, 1 mA — a relevant figure for PLC-level signal circuits where dry switching can cause oxide film issues.
Switching ratings and wire termination
The contactor switches the following currents at stated voltages: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The rated control supply voltage is 230 V at both 50 Hz and 60 Hz, with an operating range of 0.8 to 1.1 times rated voltage at 50 Hz and 0.85 to 1.1 at 60 Hz. Terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². The 45 mm width and 72 mm depth fit standard S00 contactor footprints, and the mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward, providing flexibility in dense panels.
Environmental and compliance
Operating temperature range is -25 to +60 °C, with storage and transport range of -55 to +80 °C. Shock resistance is rated at 10g for 5 ms and 5g for 10 ms. The substance prohibitance date of July 1, 2006 indicates RoHS compliance from that date forward.
Sourcing and fit verification
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. For a BOM line requiring this exact order code, the active lifecycle and standard S00 footprint mean no substitution engineering is needed.