Integrator's spec recap — 3RH1140-2AC00-0TK1
The Siemens 3RH1140-2AC00-0TK1 is a SIRIUS auxiliary contactor in frame size S00, delivering four normally-open instantaneous contacts with no make-before-break or delayed switching — a straight 4 NO block for signal extension or interposing relay duty in control circuits. Rated operational current varies with voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — matching the derating curve for AC loads across typical control voltages.
Substance prohibition compliance is documented with a reference date of 07/01/2006, aligning with RoHS requirements.
Dimensions are 73 mm deep, 45 mm wide, and 60 mm high — the S00 footprint fits standard control panel layouts and matches other SIRIUS S00 components for uniform rail spacing. Shock resistance is specified at 10g / 5 ms and 5g / 10 ms, suitable for applications on machinery with moderate vibration profiles. Solid conductor capacity is 2x (0.25... 2.5 mm²), accepting standard control wiring with or without ferrules.
Contact reliability and endurance
Mechanical endurance of the contactor is rated at 30 million typical operating cycles, reflecting the S00 family's design for high-duty applications.