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Siemens 3RH1140-1BE40 — Contactors

Siemens 3RH1140-1BE40 SIRIUS Auxiliary Contactor, 4 NO, S00

MPN3RH1140-1BE40

Siemens SIRIUS auxiliary contactor, 3RH1140-1BE40, size S00, 4 NO contacts, 24 VDC coil, 10 A AC-12 rated, screw and snap-on mounting.

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

3RH1140-1BE40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-1BE40 — Ratings & Performance
ParameterValue
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
3RH1140-1BE40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-1BE40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-1BE40 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1140-1BE40 — 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)
3RH1140-1BE40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-1BE40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1140-1BE40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 4 normally-open instantaneous contacts rated 10 A at 24 V and 10 A in AC-12 duty, which covers resistive and solid-state loads typical of PLC inputs, indicator lamps, and small relays. The coil pulls 3.2 W DC both inrush and hold, so the power supply doesn't need to differentiate pick vs. seal current. Size S00 keeps the footprint at 45 mm wide, 57.5 mm tall, 72 mm deep — it clips onto a DIN rail or screws directly to a backplate.

The 10 A AC-12 rating is the headline figure for pilot-duty switching — it's the current the contacts can make and break for resistive loads like contactor coils and signal lamps. For inductive DC loads, the voltage-specific ratings tell the real story: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V — the DC arc extinction limits the current as voltage climbs. At 230 V AC the contacts handle 6 A, at 400 V AC 3 A, at 690 V AC 1 A. That span covers most control-voltage levels in European and North American panels. The screw terminals accept 2x 0.5…1.5 mm², 2x 0.75…2.5 mm², or 2x 4 mm² solid conductors — enough for daisy-chaining the common rail through multiple auxiliary blocks. Shock tested to 10g / 5 ms and 5g / 10 ms — fine for machine-mounted cabinets near presses or conveyors.

MPN
3RH1140-1BE40