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Siemens 3RH1122-1BM40 — Contactors

Siemens 3RH1122-1BM40 SIRIUS Aux Contactor, 220V

MPN3RH1122-1BM40

Siemens SIRIUS auxiliary contactor, 3RH1122-1BM40, size S00, 220 V, 3.2 W DC coil, IP20.

$30.00Ref. 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

3RH1122-1BM40 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BM40 — 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 @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1122-1BM40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BM40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BM40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (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
3RH1122-1BM40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BM40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BM40 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

Mounting and Wiring in Tight Panels

The 3RH1122-1BM40: This contactor takes up 45 mm on the DIN rail — two slots in a standard S00 footprint. Screw and snap-on mounting together means you can clip it onto the rail and fasten for vibration resistance, or just snap it for quick placement. The front face is IP20, so no cover needed over the terminals in a typical IP54 cabinet. Wire sizes: accepts 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm² solid/stranded — enough for daisy-chaining auxiliary circuits without extra junction blocks.

Frequently asked questions

What is the depth of the 3RH1122-1BM40?

The depth is 72 mm, width 45 mm, height 57.5 mm. Fits standard S00 mounting profiles.

What wire sizes does the 3RH1122-1BM40 accept?

It accepts solid/stranded conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm² per terminal.

MPN
3RH1122-1BM40