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Siemens 3RH1131-1AM20 — Contactors

Siemens 3RH1131-1AM20 SIRIUS Auxiliary Contactor, 3 NO, Size

MPN3RH1131-1AM20

Siemens SIRIUS auxiliary contactor, 3RH1131-1AM20, Size S00, 3 NO instantaneous contacts, screw and snap-on mounting, IP20 front protection, 10 A at 24 V rated value.

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

3RH1131-1AM20 — Identification
ParameterValue
Contactor frame sizeS00
3RH1131-1AM20 — 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
3RH1131-1AM20 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz208 V
3RH1131-1AM20 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1131-1AM20 — 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
3RH1131-1AM20 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1131-1AM20 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1131-1AM20 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It is designed for control-circuit isolation and signal feedback in motor starter assemblies, contactor banks, and PLC output interposing — the three NO contacts handle the logic-level switching while the main contactor handles the load. Rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, the contactor's switching capacity drops predictably as voltage rises — at 690 V it is rated 1 A. The 6 kV surge voltage resistance (rated value) means it withstands transient overvoltages common in industrial control panels without flashover.

The Size S00 footprint — 45 mm wide, 57.5 mm tall, 72 mm deep — fits standard control-panel layouts. Terminal capacity accepts solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm².

Rated control supply voltage is 50 Hz (0.8–1.1 range) and 60 Hz (0.85–1.1 range) at 208 V — the coil accepts both 50 and 60 Hz supplies within those tolerance bands, so it works on either mains frequency without a hardware change.

Frequently asked questions

What is the switching capacity of 3RH1131-1AM20 at different voltages?

Rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. At 110 V the rating is 1 A.

What conductor sizes does 3RH1131-1AM20 accept?

Solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm².

Where can I buy 3RH1131-1AM20?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RH1131-1AM20