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Siemens 3RH2140-1BC40 — Contactors

Siemens 3RH2140-1BC40 SIRIUS Auxiliary Contactor, 4 NO, 45 m

MPN3RH2140-1BC40
Active

Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting onto 35 mm DIN rail, 45 mm width, 73 mm depth, 57.5 mm height.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH2140-1BC40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2140-1BC40 — 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 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2140-1BC40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2140-1BC40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2140-1BC40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (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 onto 35 mm DIN rail
3RH2140-1BC40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2140-1BC40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2140-1BC40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH2140-1BC40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

Rated switching currents span 10 A at 24 V AC/DC and 230 V AC, 3 A at 400 V AC, and 1 A at 690 V AC — covering typical control voltages from 24 V to 690 V. The DC coil draws 4 W closing and holding, so the PLC or relay driving it needs to source at least that. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C, with relative humidity down to 10 %.

Terminals accept 2× (0.5 to 1.5 mm²), 2× (0.75 to 2.5 mm²), or 2× 4 mm² solid or stranded wire. Clearance to adjacent components: 10 mm upward, downward, and forward; 6 mm sideways. The 73 mm depth means it stays within the standard DIN-rail envelope.

Frequently asked questions

What is the closest functional second-source for 3RH2140-1BC40?

The 3RH2140-1BP40 shares the same S00 size, 4 NO contact configuration, and DIN-rail mount, but differs in coil voltage and switching ratings — verify the coil data against your control voltage before substituting.

What are the key dimensions of 3RH2140-1BC40?

Width 45 mm, depth 73 mm, height 57.5 mm — a standard S00 auxiliary contactor footprint that fits most DIN-rail panels.

Will 3RH2140-1BC40 drop into a panel specified for 3RH2140-1BP40 without rewiring?

Mechanically yes — same size S00, same 45 mm width, same DIN-rail clip. Electrically, check the coil rating: the 1BC40 runs a DC coil; the 1BP40 may differ. If the control voltage matches, it is a direct swap.

What compliance documentation does Siemens provide for 3RH2140-1BC40?

RoHS compliance is confirmed with a substance prohibition date of 07/01/2006. The part carries the SIRIUS brand and is designed to IEC/EN standards for pollution degree 3 environments.

Where can I buy 3RH2140-1BC40 and get current pricing?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer.

MPN
3RH2140-1BC40