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Siemens 3RH1344-2BC40 — Contactors

Siemens 3RH1344-2BC40 SIRIUS Auxiliary Contactor, 4 NO, 45 m

MPN3RH1344-2BC40

Siemens SIRIUS, auxiliary contactor, size S00, 3RH1344-2BC40, 4 NO instantaneous contacts, 10 A AC-12, screw and snap-on mounting, 45 mm width.

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

3RH1344-2BC40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1344-2BC40 — 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
3RH1344-2BC40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1344-2BC40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1344-2BC40 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1344-2BC40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1344-2BC40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
3RH1344-2BC40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1344-2BC40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth114 mm

Product details

It is rated 10 A at AC-12 for resistive loads and switches control circuits up to 690 V. The part is at a current-production lifecycle stage.

Ratings and environmental limits

Pollution degree 3 suits industrial environments. Front face carries IP20 finger protection. Withstands shock at 10g / 5 ms and 5g / 10 ms. Surge voltage resistance rated at 6 kV.

Coil and contact ratings

DC magnet coil draws 3.2 W at both closing and holding. AC-15 switching capacity at 230 V is 6 A; at 400 V it is 3 A; at 500 V it is 2 A; at 690 V it is 1 A. Rated operational current at AC-12 is 10 A. The solid connection accepts 2x (0.25 to 2.5 mm²) conductors.

The lifecycle stage is current production.

Frequently asked questions

Where can I buy 3RH1344-2BC40 and what is the lead time?

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

What is the closest functional second-source for 3RH1344-2BC40?

The 3RT1015-1BB42 and 3RT1016-1BB42 are power contactors in the same SIRIUS size S00 family, but they are not direct functional equivalents — this auxiliary contactor has only NO auxiliary contacts and no main power poles. The 3RH2140-1BP40 is a similar auxiliary contactor variant but with a different contact configuration.

What is 3RH1344-2BC40's listed depth?

The depth is 114 mm.

MPN
3RH1344-2BC40