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Siemens 3RH1122-1BB40-ZW96 — Contactors

Siemens 3RH1122-1BB40-ZW96 SIRIUS Auxiliary Contactor, 24 VD

MPN3RH1122-1BB40-ZW96

Siemens SIRIUS 3RH1122-1BB40-ZW96 auxiliary contactor, 24 VDC coil, 10 A AC-12, 2 NO + 2 NC, size S00, IP20, screw and snap-on mounting.

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

3RH1122-1BB40-ZW96 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BB40-ZW96 — 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
3RH1122-1BB40-ZW96 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BB40-ZW96 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BB40-ZW96 — 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
3RH1122-1BB40-ZW96 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BB40-ZW96 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BB40-ZW96 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

The contact arrangement is 2 normally-open and 2 normally-closed instantaneous contacts, with no leading, lagging, or make-before-break options — a straightforward 2+2 configuration for standard interlocking or status feedback.

The 24 VDC coil draws 3.2 W during both pick-up and hold — no inrush spike to stress a DC supply, but the steady-state draw is constant, so budget that wattage in your 24 VDC bus calculation. Switching capacity varies by voltage: at 110 V it's rated 1 A, at 230 V it's 6 A, and at 400 V it drops to 3 A. The 10 A AC-12 rating is the maximum at 24 V rated value — for higher voltages the contacts derate significantly, so verify against your actual load voltage, not just the coil voltage. Contact reliability is specified as one incorrect switching operation per 100 million at 17 V, 1 mA — this is a dry-circuit rating, meaning the contacts are reliable even at low signal levels without needing a minimum wetting current.

Depth is 72 mm, which includes the coil terminals — account for that when spacing the panel door or adjacent components. Terminals accept solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm². That covers most control wiring sizes; for 4 mm² you'll need a ferrule or direct insertion. The screw-clamp design is standard for the SIRIUS family.

Frequently asked questions

What is the contact configuration?

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

What wire sizes does it accept?

The terminals accept solid conductors: 2x 0.5–1.5 mm², 2x 0.75–2.5 mm², or 2x 4 mm².

What is the coil power consumption?

The DC coil draws 3.2 W during both closing and holding — no inrush peak, but a constant 3.2 W load on the 24 VDC supply.

MPN
3RH1122-1BB40-ZW96