The Siemens 3RH1122-2AP00-ZW95 is a SIRIUS auxiliary contactor in size S00, carrying 2 instantaneous normally-open contacts with no make-before-break or delayed switching. It is designed to switch control signals and auxiliary loads in a panel — think feedback to a PLC, status of a motor starter, or interlocking a safety circuit — not to switch main motor power directly. Rated for 10 A at 24 V, 6 A at 230 V, and derating to 1 A at 690 V, the thermal current curve follows the AC-15 / DC-13 auxiliary contact duty typical of SIRIUS blocks. The 6 kV surge voltage resistance and pollution degree 3 rating suit it for industrial environments where transients from adjacent contactors or drives are a given.
Mounting and integration into a panel
Fastens by screw or snap-on mounting onto a DIN rail, occupying the S00 footprint: 45 mm wide, 60 mm tall, 73 mm deep. Terminal capacity accepts solid conductors 2x (0.25... 2.5 mm²), which covers standard control wiring. The operating temperature range of -25 to +60 °C and storage range of -55 to +80 °C are typical for panel-mounted auxiliary gear; shock resistance of 10g / 5 ms and 5g / 10 ms means it survives transport vibration and occasional mechanical shock on a machine frame.