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Siemens 3RH1122-1BB40-ZW97 — Contactors

Siemens 3RH1122-1BB40-ZW97 SIRIUS Auxiliary Contactor, 24 V

MPN3RH1122-1BB40-ZW97

Siemens SIRIUS auxiliary contactor, size S00, 3RH1122-1BB40-ZW97, 24 V DC coil, 4-pole, screw and snap-on mounting, IP20 front.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH1122-1BB40-ZW97 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BB40-ZW97 — 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-ZW97 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BB40-ZW97 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BB40-ZW97 — 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-ZW97 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BB40-ZW97 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BB40-ZW97 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 4 contacts — 2 normally open and 2 normally closed — so it's built for signaling and interlocking duties inside a motor control center, not for switching main motor current. The coil pulls 3.2 W to close and holds at the same 3.2 W, which matters when you're budgeting a 24 V DC supply rail in the panel.

This is a 4-pole auxiliary contactor — two make, two break. The contacts are rated for switching at various control voltages: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. Those are the AC switching currents for the auxiliary circuits, not the main power path. If you're interlocking a 400 V motor starter, the 3 A rating at that voltage tells you the contact can handle the pilot duty without welding shut. The contacts are rated for 100 million mechanical operations and show a contact reliability of one incorrect switching per 100 million at 17 V, 1 mA — that's the low-energy switching spec for PLC-level signals, so it'll pick up dry contact inputs without trouble.

Mounts with screws or snaps onto a DIN rail — that's the standard panel integration for a size S00 contactor. It fits in a 45 mm wide slot, 57.5 mm tall, 72 mm deep. Operating temperature runs from -25 °C to +60 °C, storage from -55 °C to +80 °C, and it shrugs off 10g shocks at 5 ms — fine for a vibrating panel on a conveyor line or a pump skid.

Wiring and compliance

Terminals accept solid wire: two wires of 0.5-1.5 mm², two of 0.75-2.5 mm², or a single 4 mm².

This is a current-production part in the SIRIUS line. The -ZW97 suffix is a Siemens special version code.

Frequently asked questions

What wire sizes does this contactor accept?

Terminals accept solid wire: two wires of 0.5 to 1.5 mm², two wires of 0.75 to 2.5 mm², or one wire of 4 mm². AWG equivalents are 2x (20-16), 2x (18-14), and 1x 12.

What compliance documentation is available?

RoHS compliance dated to July 1, 2006. The front protection class is IP20. Surge voltage resistance of 6 kV is listed. The part is designed for pollution degree 3 environments per IEC standards.

MPN
3RH1122-1BB40-ZW97