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Siemens 3RH1122-1AU10 — Contactors

Siemens 3RH1122-1AU10 SIRIUS Auxiliary Contactor, 10 A AC-12

MPN3RH1122-1AU10

Siemens SIRIUS auxiliary contactor, 3RH1122-1AU10, S00 size, 2 NO + 2 NC, 10 A AC-12, screw and snap-on mounting, IP20 front.

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

3RH1122-1AU10 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AU10 — 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
3RH1122-1AU10 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RH1122-1AU10 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AU10 — 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
3RH1122-1AU10 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AU10 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AU10 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 normally-open and 2 normally-closed instantaneous contacts, rated 10 A in AC-12 duty (resistive loads at 24 V), with a rated insulation voltage of 690 V and surge voltage resistance of 6 kV. The S00 frame size (45 mm wide, 57.5 mm tall, 72 mm deep) fits standard DIN-rail enclosures and is designed for screw or snap-on mounting on a 35 mm rail.

The 10 A AC-12 rating at 24 V is the resistive-load current limit for the auxiliary contacts — it governs how many pilot devices (relays, PLC inputs, indicator lamps) you can switch per contact. At 230 V the contact rating drops to 6 A, and at 400 V to 3 A, so derate accordingly when driving contactor coils or solenoid valves across line voltage. The 2 NO + 2 NC contact arrangement is fixed; there are no make-before-break or delayed-switching options on this variant. The S00 size and 45 mm width mean it occupies a single 45 mm module on a DIN rail — standard for panel layouts where space is tight. Wire termination accepts solid conductors from 0.5 mm² up to 4 mm² (or AWG 20–12), with two wires per terminal for daisy-chaining.

Shock resistance is 10g / 5 ms and 5g / 10 ms.

Frequently asked questions

What is 3RH1122-1AU10's listed depth (72 mm) on this component line?

The depth is 72 mm, with a width of 45 mm and height of 57.5 mm — the S00 frame size fits a single 45 mm DIN-rail module.

What is 3RH1122-1AU10's listed solid (2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), 2x 4 mm²) on this component line?

The terminal accepts solid conductors: two wires of 0.5–1.5 mm², or two wires of 0.75–2.5 mm², or two wires of 4 mm² per terminal. AWG equivalents are 2x (20–16), 2x (18–14), and 1x 12.

Will 3RH1122-1AU10 drop into a panel that was specified around 3RH2122-2AV00 without rewiring?

Both are S00-size auxiliary contactors with the same 45 mm width and DIN-rail snap-on mounting, so the mechanical footprint is identical. The 3RH1122-1AU10 has 2 NO + 2 NC instantaneous contacts; the 3RH2122-2AV00 has a different contact arrangement (check its spec). If your wiring matches the 2 NO + 2 NC layout, it drops in without rewiring — but verify the contact configuration against your schematic before committing.

MPN
3RH1122-1AU10