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Siemens 3RH1140-2BE40 — Contactors

Siemens 3RH1140-2BE40 SIRIUS Auxiliary Contactor, 4 NO, 10 A

MPN3RH1140-2BE40

Siemens SIRIUS auxiliary contactor, size S00, 4 NO + 0 NC, rated 10 A AC-12 at 24 V, 45 mm wide, screw and snap-on mounting, 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

3RH1140-2BE40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-2BE40 — 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
3RH1140-2BE40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-2BE40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-2BE40 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1140-2BE40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1140-2BE40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-2BE40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1140-2BE40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

It carries four normally open (4 NO) instantaneous contacts and zero NC, make-before-break, or delayed poles — a clean NO-only block for extending a contactor's auxiliary circuit. Rated operational current reaches 10 A at 24 V (AC-12 duty), 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V — the AC-12 resistive load curve governs the contact rating, so it is suited for pilot-duty and control transformer loads, not motor starting. The maximum AC-12 rating is 10 A. Mounts via screw or snap-on to DIN rail (35 mm), occupies 45 mm width, 60 mm height, 73 mm depth. Pollution degree 3 (industrial environment), IP20 on the front face. Coil holding power is 3.2 W DC, and the coil closing power is also 3.2 W DC. Surge voltage resistance rated at 6 kV. Shock resistance 10g / 5 ms and 5g / 10 ms.

Panel Integration

Solid connection accepts 2x (0.25 to 2.5 mm²) per terminal.

Frequently asked questions

What is the closest functional second-source for 3RH1140-2BE40?

The 3RH2140-1BP40 is a sibling in the same SIRIUS family but carries a different contact configuration — verify your required NO/NC count before substituting. The 3RH1140-2BE40 has 4 NO, 0 NC; the 3RH2140-1BP40 may differ.

What is the depth of 3RH1140-2BE40?

The depth is 73 mm.

What wire size does the 3RH1140-2BE40 accept?

The solid connection accepts 2x (0.25 to 2.5 mm²) per terminal.

Will 3RH1140-2BE40 drop into a panel specified for 3RH2140-1BP40 without rewiring?

The physical footprint (size S00, 45 mm wide) and DIN-rail mounting are identical, so mechanical fit is the same. However, verify the contact configuration — the 3RH1140-2BE40 has 4 NO, 0 NC, while the 3RH2140-1BP40 may have a different NO/NC split. Wiring changes may be needed if the circuit requires NC contacts.

Where can I buy 3RH1140-2BE40?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RH1140-2BE40