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Siemens 3RH2131-1AH00 — Contactors

Siemens 3RH2131-1AH00 SIRIUS Auxiliary Contactor, 3 NO Conta

MPN3RH2131-1AH00
Active

Siemens SIRIUS auxiliary contactor, 3RH2131-1AH00, size S00, 3 NO instantaneous contacts, screw and snap-on 35 mm DIN rail mounting, 73 mm depth.

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

3RH2131-1AH00 — Identification
ParameterValue
Contactor frame sizeS00
3RH2131-1AH00 — 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 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2131-1AH00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz48 V
3RH2131-1AH00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2131-1AH00 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (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 onto 35 mm DIN rail
3RH2131-1AH00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2131-1AH00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2131-1AH00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth73 mm
3RH2131-1AH00 — Specifications
ParameterValue
At AC4 ... 15 ms

Product details

Auxiliary contactor for panel builders and MRO

It's the switching element you use to extend a contactor's auxiliary circuit or build a logic interlock — not a main power contactor, but the relay that tells the PLC the main contactor has picked up. Rated operational current spans 10 A at 24 V and 230 V down to 0.26 A at 600 V. That's the AC-15 / DC-13 switching curve — the contacts handle solenoid valves, contactor coils, and indicator loads across control voltages, not motor inrush.

That's flexible for tight enclosures or angled subpanels — rare for a contactor this size. Terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded. That's enough for daisy-chaining control wiring without a separate terminal block — common in pump panel and conveyor line builds. The storage limit covers handling during shipping and warehouse storage — the -55 °C floor is for cold-chain transport, not running in a freezer.

Frequently asked questions

What is the contact configuration of 3RH2131-1AH00?

Three normally-open (3 NO) instantaneous contacts. No timed or latching contacts — it's a straight auxiliary contactor for mirroring main contactor status or extending control logic.

MPN
3RH2131-1AH00