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Siemens 3RH1122-1AH10 — Contactors

Siemens 3RH1122-1AH10 SIRIUS Auxiliary Contactor, 10A AC-12,

MPN3RH1122-1AH10

Siemens SIRIUS auxiliary contactor, 3RH1122-1AH10, size S00, 2 NO + 2 NC, 10 A AC-12, screw and snap-on mounting, IP20.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH1122-1AH10 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AH10 — 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
3RH1122-1AH10 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RH1122-1AH10 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AH10 — 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
3RH1122-1AH10 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AH10 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AH10 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It provides 2 normally open and 2 normally closed instantaneous contacts, rated at 10 A for AC-12 resistive loads.

The 6 kV rated surge voltage withstand gives it solid isolation coordination for industrial panels with mixed voltage levels. Contact reliability is specified at one incorrect switching operation per 100 million cycles at 17 V, 1 mA — that's the low-energy signal switching threshold. If you're dry-switching PLC-level signals, this contactor handles it without the contact wetting issues you'd see on a standard power contactor.

Terminals accept solid conductors from 0.5 mm² up to 4 mm² (or 2x 1.5 mm², 2x 2.5 mm²), with AWG equivalents of 20–16, 18–14, and a single 12 AWG.

Frequently asked questions

What wire sizes does the 3RH1122-1AH10 accept?

Solid conductors from 0.5 mm² to 4 mm², with dual-wire capability for 2x 0.5–1.5 mm² and 2x 0.75–2.5 mm². AWG equivalents are 2x 20–16, 2x 18–14, and single 12 AWG.

What is the depth of the 3RH1122-1AH10?

The depth is 72 mm, with a width of 45 mm and height of 57.5 mm — standard S00 frame size.

Does the 3RH1122-1AH10 have any compliance documentation?

The part carries RoHS compliance with a substance prohibition date of July 1, 2006, and is reference-coded per IEC 81346-2 as K. The IP20 front protection and 6 kV surge voltage rating indicate design for industrial control panels.

MPN
3RH1122-1AH10