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Siemens 3RH1140-1BC40 — Contactors

Siemens 3RH1140-1BC40 SIRIUS Auxiliary Contactor, 4 NO, 10 A

MPN3RH1140-1BC40

Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on DIN-rail mount, 45 x 57.5 x 72 mm, IP20 front.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH1140-1BC40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-1BC40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1140-1BC40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-1BC40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-1BC40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting
3RH1140-1BC40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-1BC40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1140-1BC40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

Coil holds at 3.2 W DC; the magnet circuit is rated for 30 V rated value with a 0.8 initial pickup threshold and 1.1 full-scale dropout.

Contact configuration and ratings

Switching current by voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, 1 A at 690 V, and 0.27 A at 220 V. The 110 V rating is 1 A. These are the rated operational currents — use them for contactor coil switching, indicator lamps, or small solenoid valves within the S00 frame's thermal limits.

Shock resistance rated at 10g for 5 ms and 5g for 10 ms — sufficient for most industrial panel applications but not for high-vibration environments like direct engine mounting. Pollution degree 3, meaning it tolerates conductive pollution in controlled environments. Terminal capacity accepts 2x 0.5 to 1.5 mm² solid, 2x 0.75 to 2.5 mm², or 2x 4 mm². Surge voltage resistance rated at 6 kV.

Frequently asked questions

What is the depth of 3RH1140-1BC40?

The depth is 72 mm, with a width of 45 mm and height of 57.5 mm — fits standard S00 DIN-rail footprint.

Will 3RH1140-1BC40 drop into a panel specified for 3RH2140-1BP40?

Both are size S00 with the same DIN-rail mounting and 45 mm width, so the mechanical footprint matches. However, verify the coil voltage and terminal arrangement — the 3RH2140-1BP40 may use a different coil rating or auxiliary contact configuration.

MPN
3RH1140-1BC40