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Siemens 3RH1122-1AB00-1AA0 — Contactors

Siemens 3RH1122-1AB00-1AA0 SIRIUS Auxiliary Contactor, Size

MPN3RH1122-1AB00-1AA0

Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1AB00-1AA0, 2 NO + 2 NC instantaneous contacts, rated 10 A at 24 V, 45 mm width, IP20 front, screw and snap-on mounting.

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

Specifications

3RH1122-1AB00-1AA0 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AB00-1AA0 — 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
3RH1122-1AB00-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RH1122-1AB00-1AA0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AB00-1AA0 — 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
3RH1122-1AB00-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AB00-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AB00-1AA0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

Its 2 normally-open and 2 normally-closed instantaneous contacts handle 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — so the 24 V figure is the high-current rating; at 400 V line voltage the contact current drops to 3 A, which is typical for auxiliary contacts in a 400 V control panel. Contact reliability is rated at one incorrect switching operation per 100 million cycles at 17 V, 1 mA — that's the dry-circuit performance for PLC-level signals. For general-purpose 24 VDC control loads the mechanical life of 30 million operations is the practical limit, not the electrical rating.

Lifecycle and compliance — active, RoHS dated

Shock resistance of 10 g for 5 ms and 5 g for 10 ms covers normal panel vibration and transport shock.

Wire termination — solid conductor cross-sections

The screw terminals accept solid conductors in three ranges: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². That means each clamp can take two wires of the same size, useful for daisy-chaining control voltage or signal common without a separate terminal block. The 4 mm² capacity handles the 10 A 24 V circuit without excessive voltage drop.

Mounting position and mechanical integration

Mounting position is standing on a horizontal surface — the contactor is designed for vertical DIN-rail orientation with the terminals facing up. Depth is 72 mm, height 57.5 mm, width 45 mm — the S00 envelope matches the standard contactor auxiliary block size, so it fits alongside S00 contactors in a grouped motor starter array without extra DIN-rail space.

Frequently asked questions

What is 3RH1122-1AB00-1AA0'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 envelope dimensions. This matches the standard auxiliary contact block footprint for SIRIUS contactors.

What is 3RH1122-1AB00-1AA0's listed solid (2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), 2x 4 mm²) on this component line?

The screw terminals accept solid conductors in three cross-section ranges: two wires of 0.5 to 1.5 mm², two wires of 0.75 to 2.5 mm², or two wires of 4 mm² per clamp. This allows daisy-chaining two conductors of the same size in each terminal.

MPN
3RH1122-1AB00-1AA0