SIRIUS auxiliary contactor, size S00 — 4 NO, 10 A
The Siemens 3RH2140-2FB40-1AA0 is a SIRIUS auxiliary contactor in size S00, with 4 instantaneous normally-open contacts. It is rated 10 A at both 24 V and 230 V, making it a direct fit for control circuits in motor starter assemblies or PLC output isolation. Mounting is screw or snap-on onto 35 mm DIN rail, with a footprint of 45 mm wide by 73 mm deep by 70 mm tall — standard for the S00 frame. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side.
Switching ratings and contact life
The contactor carries a full voltage ladder: 10 A at 24 V and 230 V, 4.7 A at 60 V, 3 A at 110 V and 400 V, 1.2 A at 220 V, 0.5 A at 440 V, 2 A at 500 V, 0.26 A at 600 V, and 1 A at 690 V. This covers both control and light power switching across common industrial voltages. Mechanical life is rated at 30 million operations typical. The arcing time is 10 to 15 ms, and the closing power of the DC magnet coil is 4 W. A built-in diode surge suppressor protects the coil drive circuit.
Environmental tolerance and compliance
Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. Pollution degree 3 (industrial environment with conductive pollution). Relative humidity minimum 10 %. Lifecycle status is current production. The part carries RoHS/REACH compliance with a substance prohibition date of 10/01/2009. Sourced to order against BOM quantities; availability and current pricing confirmed at RFQ.