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Siemens 3RH1122-1AB00-ZW95 — Contactors

Siemens 3RH1122-1AB00-ZW95 SIRIUS Auxiliary Contactor, 2 NO,

MPN3RH1122-1AB00-ZW95

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

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RH1122-1AB00-ZW95 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AB00-ZW95 — 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
3RH1122-1AB00-ZW95 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RH1122-1AB00-ZW95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AB00-ZW95 — 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
3RH1122-1AB00-ZW95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AB00-ZW95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AB00-ZW95 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 normally open (NO) instantaneous contacts, rated at 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V — meaning it handles everything from PLC-level pilot duty up to higher-voltage interlock circuits in a panel. Mounting is by screw or snap-on onto a DIN rail.

The contact reliability spec tells you this contactor is rated for one incorrect switching operation per 100 million cycles at 17 V and 1 mA — that's a dry-circuit rating, meaning it'll reliably switch low-energy signals from sensors or PLC outputs without needing a minimum wetting current. If you're using it to drive a contactor coil or a small relay, that's not a concern; but if you're switching a dry logic signal, this part won't bounce or fail to make contact. This helps the contactor handle transient spikes without flashover.

Mechanical endurance and wiring

Shock resistance is 10g for 5 ms and 5g for 10 ms. Terminals accept solid conductors from 0.5 mm² up to 4 mm², with multiple combinations: two wires of 0.5–1.5 mm², two of 0.75–2.5 mm², or a single 4 mm². That's enough for daisy-chaining control wiring or landing a heavier common feed. The product extension auxiliary switch flag means this contactor accepts add-on auxiliary contact blocks if you need more than the built-in 2 NO.

RoHS compliance date is noted as July 1, 2006, meaning it meets the original RoHS directive. No REACH or UL listing is explicitly stated in the evidence, so verify those against your local compliance requirements before committing the BOM line.

Frequently asked questions

What wire sizes does the terminal accept?

The terminals accept solid conductors in these combinations: two wires of 0.5–1.5 mm², two wires of 0.75–2.5 mm², or a single 4 mm² conductor. This covers most control wiring needs for daisy-chaining or landing a common feed.

MPN
3RH1122-1AB00-ZW95