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Siemens 3RH1122-1AB00-0TK0 — Contactors

Siemens 3RH1122-1AB00-0TK0 SIRIUS Auxiliary Contactor, Size

MPN3RH1122-1AB00-0TK0

Siemens SIRIUS auxiliary contactor, Size S00, 3RH1122-1AB00-0TK0, 2 NO + 2 NC contacts, 24 V 50/60 Hz coil, screw and snap-on mounting, IP20, 45 mm width.

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

Specifications

3RH1122-1AB00-0TK0 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1AB00-0TK0 — 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
3RH1122-1AB00-0TK0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RH1122-1AB00-0TK0 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1AB00-0TK0 — 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
3RH1122-1AB00-0TK0 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1AB00-0TK0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1AB00-0TK0 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 normally-open and 2 normally-closed instantaneous contacts, rated for switching at 24 V 50/60 Hz coil voltage.

The contacts are rated for a range of switching voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These are the maximum continuous currents at each voltage level — a typical control-circuit load (a PLC output, relay coil, or indicator lamp) will fall well within these limits. The surge voltage withstand is 6 kV, so the contactor handles transient spikes common in industrial environments without welding or tracking. If your application involves gold-plated contacts for very low loads, this part handles that duty without the usual oxidation concerns.

Wire termination and environmental limits

The screw terminals accept solid conductors in three size ranges: two wires each of 0.5–1.5 mm², 0.75–2.5 mm², and up to 4 mm². That covers most control wiring from signal-level to power-distribution runs. Shock resistance is 10g for 5 ms and 5g for 10 ms, so it holds up in applications with moderate vibration — conveyors, pumps, and general machinery.

Frequently asked questions

Where can I buy 3RH1122-1AB00-0TK0 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the closest functional second-source for 3RH1122-1AB00-0TK0?

The 3RH2422-1AB00 is a similar SIRIUS auxiliary contactor with the same Size S00 footprint and 24 V coil, but it carries 4 NO contacts instead of the 2 NO + 2 NC configuration on this part. If your circuit needs four normally-open contacts, that's the direct drop-in; if you need the mixed NO/NC set, stick with this order code.

What is the depth of 3RH1122-1AB00-0TK0?

The listed depth is 72 mm.

What wire sizes does 3RH1122-1AB00-0TK0 accept?

The screw terminals accept solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), and 2x 4 mm².

Will 3RH1122-1AB00-0TK0 drop into a panel specified around 3RH2422-1AB00?

Yes — both are Size S00, same 45 mm width and screw/snap-on mounting, so the mechanical fit is identical. The difference is contact arrangement: this part has 2 NO + 2 NC, while the 3RH2422-1AB00 has 4 NO. Verify your control circuit's NC requirements before swapping.

What compliance documentation does Siemens provide for 3RH1122-1AB00-0TK0?

The part is RoHS compliant (substance prohibition date 07/01/2006). Standard Siemens documentation includes a CE declaration of conformity and the product datasheet. UL and CSA listings are typical for the SIRIUS line but are not explicitly confirmed in this record.

MPN
3RH1122-1AB00-0TK0