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Siemens 3RH2271-2BB40 — Contactors

Siemens SIRIUS 3RH2271-2BB40 Auxiliary Contactor, 24 VDC, Si

MPN3RH2271-2BB40
Active

Siemens SIRIUS auxiliary contactor, size S00, 24 VDC coil, 7 NO contacts, screw and snap-on mounting on 35 mm DIN rail.

$33.02Ref. price · indicative, final on quote
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

3RH2271-2BB40 — Identification
ParameterValue
Contactor frame sizeS00
3RH2271-2BB40 — 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 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2271-2BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2271-2BB40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2271-2BB40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0,5 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail
3RH2271-2BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
3RH2271-2BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2271-2BB40 — Mechanical
ParameterValue
Width45 mm
Height70 mm
Depth121 mm
3RH2271-2BB40 — Specifications
ParameterValue
At AC10 000 1/h

Product details

The coil is rated 24 VDC with a closing power of 4 W and holding power of 4 W — a low, constant draw that keeps the power supply budget predictable. Contact ratings are given per voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V, among others. These are the thermal current limits for switching control loads; for motor-circuit auxiliary duty, stay within the listed values at the applied voltage.

Dimensions are 70 mm high, 45 mm wide, and 121 mm deep. These numbers govern panel layout — respect them to avoid arc flash or heat buildup.

Frequently asked questions

Where can I buy 3RH2271-2BB40 and get a price?

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 3RH2271-2BB40?

The closest functional peer is the 3RH2131-2BF40, which also carries 7 NO contacts and a 24 VDC coil, but in a different size (S0 vs S00) — verify panel cutout and DIN-rail space before substituting.

MPN
3RH2271-2BB40