SIRIUS auxiliary contactor, size S00 — 4 NO, panel-fit
The Siemens 3RH1140-1AL00 is a SIRIUS auxiliary contactor in frame size S00, carrying four normally-open instantaneous contacts and no delayed or lagging switching elements. Rated for 10 A at 24 V and 6 A at 230 V, with a surge voltage withstand of 6 kV and pollution degree 3 — suitable for control circuits in industrial panels where contact reliability is specified at one incorrect operation per 100 million switching cycles at 17 V, 1 mA. Mounts via screw or snap-on onto DIN rail; the 45 mm width and 72 mm depth fit standard enclosure layouts, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt forward and backward. IP20 on the front face means the contactor is protected against finger contact but requires enclosure-level sealing for washdown or dusty environments — standard for panel-mount auxiliary contactors.
Sourcing and lifecycle
RoHS compliance dated July 1, 2006 covers substance prohibitions; operating temperature range spans -25 to +60 °C, with storage and transport tolerance from -55 to +80 °C.
Wire termination and contact ratings
Solid and stranded conductors accepted: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm² per terminal — covers typical control wiring from signal-level to moderate power circuits. Auxiliary contact ratings across common control voltages: 1 A at 110 V, 0.27 A at 220 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V — derate accordingly for inductive loads. Mechanical endurance rated at 30 million switching operations typical; shock resistance of 10g / 5 ms and 5g / 10 ms covers most industrial vibration profiles.