Skip to main content
Log in
Siemens 3RH1122-2AF00 — Contactors

Siemens 3RH1122-2AF00 SIRIUS Auxiliary Contactor, 10A AC-12,

MPN3RH1122-2AF00

Siemens SIRIUS auxiliary contactor, 3RH1122-2AF00, size S00, 2NO+2NC, rated 10 A at AC-12, screw and snap-on mounting, 45 mm width.

$48.01Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RH1122-2AF00 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-2AF00 — Ratings & Performance
ParameterValue
Rated value @ 24 V10 A
Rated value @ 110 V1 A
Rated value @ 220 V0.27 A
3RH1122-2AF00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RH1122-2AF00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-2AF00 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1122-2AF00 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
3RH1122-2AF00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-2AF00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-2AF00 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Auxiliary contactor for control-circuit switching

Its AC-12 rated operating current of 10 A means it handles resistive control loads (pilot lights, PLC inputs, contactor coils) at 24 V up to that current; the 24 V rated value is 10 A, dropping to 1 A at 110 V and 0.27 A at 220 V as the switching arc gets harder to quench at higher voltages.

Terminal capacity accepts 2x (0.25 to 2.5 mm²) solid or 2x (0.25 to 1.5 mm²) finely stranded with ferrule, which covers the common control-circuit wire sizes.

Frequently asked questions

Where can I buy 3RH1122-2AF00?

This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time.

What is the closest functional second-source to 3RH1122-2AF00?

The 3RH2122-2AF00 is a direct peer with the same 2NO+2NC contact arrangement and S00 footprint. The coil voltage or regional variant may differ — verify the coil rating before substituting. For a power contactor replacement, the 3RT1017-1AK61 shares the same S00 frame and DIN-rail mounting but is a power contactor, not an auxiliary contactor; it will not drop in as a direct swap without reviewing the control circuit.

What compliance documentation does Siemens provide for 3RH1122-2AF00?

Siemens SIRIUS products typically carry UL, CSA, CE, and IEC certifications. The part is designed to IEC 60947-5-1 for control-circuit devices. Specific RoHS/REACH declarations are available from Siemens documentation — request them with your RFQ.

Will 3RH1122-2AF00 drop into a panel specified around 3RT1017-1AK61?

Yes — both use the S00 contactor frame and mount on the same 35 mm DIN rail. The auxiliary contactor fits alongside the power contactor without rail or terminal changes. Verify that the control voltage and contact arrangement match your circuit before ordering.

MPN
3RH1122-2AF00