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Siemens 3RH1122-1BB40-0TK1-ZX95 — Contactors

Siemens 3RH1122-1BB40-0TK1-ZX95 SIRIUS Auxiliary Contactor,

MPN3RH1122-1BB40-0TK1-ZX95

Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BB40-0TK1-ZX95, 24 VDC coil, 10 A at 24 V, screw and snap-on mounting, IP20 front.

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Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH1122-1BB40-0TK1-ZX95 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BB40-0TK1-ZX95 — Ratings & Performance
ParameterValue
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
3RH1122-1BB40-0TK1-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BB40-0TK1-ZX95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BB40-0TK1-ZX95 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RH1122-1BB40-0TK1-ZX95 — 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)
3RH1122-1BB40-0TK1-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BB40-0TK1-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1122-1BB40-0TK1-ZX95 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It's a control-circuit switching device, not a main power contactor — it handles signal-level loads like PLC inputs, relay coils, and indicator lamps. The 24 VDC coil pulls in at the rated value and holds at 3.2 W, so it's a known load on a 24 VDC power supply. The 10 A rating at 24 V (AC-12 maximum) covers most control-circuit duty.

Mounts via screw or snap-on to DIN rail. Zero side clearance needed — you can stack it tight against adjacent devices.

Wiring and connection specs

Terminals accept solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and 2x 4 mm². That covers standard control wiring up to 12 AWG. Depth is 72 mm, which is typical for S00 auxiliary contactors — leaves enough room for wiring fingers in a shallow enclosure.

Switching ratings across voltages

The auxiliary contacts are rated for switching at multiple control voltages: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The contactor has 2 instantaneous contacts and no delayed or leading/lagging switching — it's a straightforward on/off auxiliary block.

Frequently asked questions

What are the key ratings I need to know for BOM fit?

The key specs are: 24 VDC coil, 10 A at 24 V (AC-12 max), size S00 form factor, 45 mm wide, screw/snap-on mounting, IP20 front. It's an auxiliary contactor — use it for control circuits, not motor power switching.

How does this compare to a 3RT1015 contactor for panel drop-in?

The 3RT1015 is a main power contactor (motor switching), while this 3RH1122 is an auxiliary contactor (control signaling). They share the S00 footprint, so the 3RH1122 can mount alongside or be ganged with a 3RT1015 on the same DIN rail. But they're not direct substitutes — the 3RH1122 handles lower currents and is meant for auxiliary circuits, not motor loads.

MPN
3RH1122-1BB40-0TK1-ZX95