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Siemens 3RH1122-1BN40-0AA6 — Contactors

Siemens 3RH1122-1BN40-0AA6 SIRIUS Auxiliary Contactor, 45 mm

MPN3RH1122-1BN40-0AA6

Siemens SIRIUS auxiliary contactor, 3RH1122-1BN40-0AA6, size S00, 45 mm wide, 2 NO + 2 NC contacts, rated 10 A at 24 V, 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

3RH1122-1BN40-0AA6 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BN40-0AA6 — 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
3RH1122-1BN40-0AA6 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BN40-0AA6 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BN40-0AA6 — 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
3RH1122-1BN40-0AA6 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BN40-0AA6 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BN40-0AA6 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 NO and 2 NC instantaneous contacts, rated for 10 A at 24 V and derated to 1 A at 690 V, so it handles both low-level PLC signals and moderate pilot-duty loads. The 45 mm width and size S00 frame let it snap onto a DIN rail alongside a matching contactor without eating extra panel space.

The 24 V rated current of 10 A is the headline figure — it tells you the contact set can switch a 24 VDC control load like a small solenoid valve or a PLC input module without derating. If you're switching a 24 VDC proximity sensor or a relay coil, the contacts won't gum up from low energy. The mechanical life of 30 million operations means the armature and spring set will outlast most panel revisions.

Terminals accept solid conductors from 0.5 mm² up to 4 mm² (two wires per clamp for smaller sizes), and AWG equivalents from 20 to 12. That covers standard control wiring — 1.5 mm² for most 24 V circuits, 2.5 mm² for longer runs. The depth of 72 mm leaves room behind the DIN rail for cable ducts.

Frequently asked questions

What are the key ratings for this auxiliary contactor?

It has 2 NO + 2 NC instantaneous contacts rated 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V. Mechanical life is 30 million operations, and contact reliability is 1 failure per 100 million operations at 17 V, 1 mA. Surge voltage resistance is 6 kV.

What mounting options does it support?

Screw and snap-on mounting on a 35 mm DIN rail. The mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward and backward. Front protection is IP20.

What wire sizes does it accept?

Solid conductors from 0.5 mm² to 4 mm² (two wires per clamp for 0.5–2.5 mm²), and AWG 20 to 12. The depth is 72 mm.

MPN
3RH1122-1BN40-0AA6