Skip to main content
Siemens 3RH1122-2KB40 — Contactors

3RH1122-2KB40 - Siemens

MPN3RH1122-2KB40

coupling contactor, 2 NO + 2 NC 24 V DC 0.7...1.25* Us with varistor spring-loaded terminal size S00!!! phased-out product!!! successor is SIRIUS 3RH2 preferred successor type is >>3RH2122-2LB40<<

StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
How we verify every order →

Specifications

Identification

3RH1122-2KB40 — Identification
ParameterValue
Contactor frame sizeS00

Ratings & Performance

3RH1122-2KB40 — 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

Control & Coil

3RH1122-2KB40 — Control & Coil
ParameterValue
Control supply voltage typeDC

Contacts & Poles

3RH1122-2KB40 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)

Connection & Mounting

3RH1122-2KB40 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting

Durability

3RH1122-2KB40 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000

Environmental

3RH1122-2KB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m

Mechanical

3RH1122-2KB40 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm
MPN
3RH1122-2KB40