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Siemens 3RH1122-1AL00 — Contactors

Siemens 3RH1122-1AL00 SIRIUS Auxiliary Contactor, 2 NO + 2 N

MPN3RH1122-1AL00

Siemens SIRIUS 3RH1122-1AL00 auxiliary contactor, size S00, 2 NO + 2 NC contacts, screw and snap-on mounting, IP20 front.

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

3RH1122-1AL00 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AL00 — 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
3RH1122-1AL00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz125 V
3RH1122-1AL00 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AL00 — 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
3RH1122-1AL00 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AL00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AL00 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 normally-open and 2 normally-closed instantaneous contacts, configurable for interlocking, status feedback, or logic-level signal routing inside a panel. The size S00 footprint (45 mm wide, 57.5 mm high, 72 mm deep) slots into the same DIN-rail real estate as the matching S00 contactors and overload relays.

Each contact is rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — these are the thermal (resistive) current ratings that govern continuous carry. For inductive DC loads the numbers drop sharply: 1 A at 110 V, 0.27 A at 220 V. That 0.27 A at 220 VDC is the figure to watch if you're switching DC solenoids or brake coils; the AC ratings don't apply there. Surge voltage withstand is 6 kV, which covers the impulse voltage expected in 400 V industrial environments (overvoltage category III).

Wiring and mechanical endurance

That covers most control-circuit wiring from signal-level pairs to 4 mm² power feeds for the contactor coil itself. Shock resistance is 10g at 5 ms and 5g at 10 ms, so it holds up on vibrating conveyor frames or packaging machinery.

Environmental compliance includes RoHS substance prohibition dated July 1, 2006, which covers the original EU RoHS directive. The pollution degree rating of 3 means it's designed for industrial environments with conductive or dry non-conductive pollution — standard for control panels not in clean rooms.

Frequently asked questions

What is the contact configuration of 3RH1122-1AL00?

It has 2 normally-open and 2 normally-closed instantaneous contacts. There are no leading, lagging, delayed, or make-before-break contacts on this variant.

What wire sizes does the 3RH1122-1AL00 accept?

The terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². This covers most control-circuit wiring from signal pairs up to 4 mm² power feeds.

What is the operating temperature range for this auxiliary contactor?

During operation it is rated from -25 °C to +60 °C. Storage and transport range is -55 °C to +80 °C.

Can the 3RH1122-1AL00 be mounted in any orientation?

Yes, it allows ±180° rotation on a vertical mounting surface and can be tilted forward or backward by ±22.5° on a vertical surface. This gives flexibility for tight panel layouts.

MPN
3RH1122-1AL00