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Siemens 3RH1122-2AM20 — Contactors

Siemens 3RH1122-2AM20 SIRIUS Auxiliary Contactor, 2 NO+2 NC,

MPN3RH1122-2AM20

Siemens SIRIUS auxiliary contactor, size S00, 2 NO + 2 NC instantaneous contacts, 10 A at 24 V, screw and snap-on mounting, 45 mm width, IP20 front.

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

3RH1122-2AM20 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-2AM20 — 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
3RH1122-2AM20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz208 V
3RH1122-2AM20 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-2AM20 — 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
3RH1122-2AM20 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-2AM20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-2AM20 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

The Siemens 3RH1122-2AM20 is a SIRIUS auxiliary contactor in size S00, providing 2 normally open and 2 normally closed instantaneous contacts for control-circuit switching up to 10 A at 24 V. The IP20 front protection means it is suited for enclosure interiors where no washdown or dust ingress is expected.

Ratings and switching capacity

The contactor is rated for a rated operational current of 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V, covering control voltages across common global supply levels. The 50 Hz rated value is 0.8... 1.1 and the 60 Hz rated value is 0.85... 1.1 — these are the permissible voltage ranges (as a factor of rated voltage) for coil operation, ensuring the contactor picks up and holds across typical line variations.

Mounting and environmental

Shock resistance of 10g / 5 ms and 5g / 10 ms covers most machine vibration profiles. The conductor cross-section accepts 2x (0.25... 2.5 mm²) solid or stranded — spring-cage or screw terminals (depends on variant; this order code is screw-type).

Frequently asked questions

Where can I buy 3RH1122-2AM20?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the depth of 3RH1122-2AM20?

73 mm, with a width of 45 mm and height of 60 mm, fitting the S00 contactor footprint.

What wire size does 3RH1122-2AM20 accept?

Solid conductors: 2x (0.25... 2.5 mm²).

Will 3RH1122-2AM20 drop into a panel built for 3RH2122-2AF00?

Both are SIRIUS size S00 auxiliary contactors with the same 45 mm width and screw/snap-on mounting, so the mechanical footprint is identical. The 3RH1122-2AM20 has 2 NO + 2 NC instantaneous contacts; the 3RH2122-2AF00 has a different contact configuration. Check your control circuit voltage and contact arrangement before substituting.

MPN
3RH1122-2AM20