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Siemens 3RH1140-2BD40 — Contactors

Siemens 3RH1140-2BD40 SIRIUS Auxiliary Contactor, Size S00,

MPN3RH1140-2BD40

Siemens SIRIUS auxiliary contactor, size S00, 3RH1140-2BD40, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front, rated operational current 10 A at AC-12.

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

3RH1140-2BD40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-2BD40 — 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
3RH1140-2BD40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-2BD40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-2BD40 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1140-2BD40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1140-2BD40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-2BD40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1140-2BD40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

It carries four normally-open (NO) instantaneous contacts, no delayed or lagging contacts, so it's a straight-up signal repeater, not a timing element. Rated operational current hits 10 A in AC-12 duty (resistive loads at line frequency), and it's rated for switching down to 0.27 A at 220 V DC and up to 6 A at 230 V AC — so it'll handle a mix of coil and signal loads across a typical 24–690 V control panel.

Side clearance is zero mm, meaning you can butt it against the next device without derating for airflow.

Environmental and mechanical specs

Shock resistance is 10g for 5 ms and 5g for 10 ms, so it won't rattle loose on a vibrating conveyor line.

Frequently asked questions

Where can I buy 3RH1140-2BD40 and how do I get a price?

This part is sourced and quoted to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ and we'll get you a firm price and lead time.

What compliance documentation does this brand provide for 3RH1140-2BD40?

As a Siemens SIRIUS product, standard documentation includes a CE declaration of conformity and the product datasheet. UL, CSA, and other agency approvals are typical for this series but should be verified against the specific variant at order time. RoHS and REACH compliance is standard for current-production Siemens industrial controls.

MPN
3RH1140-2BD40