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Siemens 3RH2122-1KM40-0LA4 — Contactors

3RH2122-1KM40-0LA4

MPN3RH2122-1KM40-0LA4
Active

Contactor relay railway, 2 NO + 1 NC 220 V DC, 0.7... 1.25* US, with integrated suppressor diode, Size S00, screw terminal installation on standard mounting rail optimized (20 G) suitable for PLC outputs

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RH2122-1KM40-0LA4 — Identification
ParameterValue
Contactor frame sizeS00
3RH2122-1KM40-0LA4 — Ratings & Performance
ParameterValue
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
3RH2122-1KM40-0LA4 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2122-1KM40-0LA4 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2122-1KM40-0LA4 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH2122-1KM40-0LA4 — Connection & Mounting
ParameterValue
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RH2122-1KM40-0LA4 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2122-1KM40-0LA4 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
3RH2122-1KM40-0LA4 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth117 mm
3RH2122-1KM40-0LA4 — Specifications
ParameterValue
At AC10 000 1/h
MPN
3RH2122-1KM40-0LA4