Skip to main content
Siemens 3RH1122-1BB40-ZW98 — Contactors

Siemens 3RH1122-1BB40-ZW98 SIRIUS Auxiliary Contactor, 24 V

MPN3RH1122-1BB40-ZW98

Siemens SIRIUS auxiliary contactor, 3RH1122-1BB40-ZW98, 24 V DC coil, 2 NO instantaneous contacts, S00 frame, IP20 front, 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-ZW98 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BB40-ZW98 — 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-ZW98 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BB40-ZW98 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BB40-ZW98 — 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-ZW98 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BB40-ZW98 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BB40-ZW98 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 instantaneous normally-open contacts, rated for 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — that's the AC-15 / DC-13 control-circuit duty curve, so it handles PLC outputs, relay coils, and signal interlocking in a panel. The coil pulls in at 24 V DC nominal, drawing 3.2 W during both pick-up and hold — no AC hum, no inrush spike to worry about on a 24 VDC power supply. Drop-out is clean below about 18 V, which matters if you're sequencing contactors through a safety relay.

Mounts via screw or snap-on onto DIN rail — the S00 footprint is 45 mm wide, 57.5 mm tall, 72 mm deep. Terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid — AWG equivalents 20-16, 18-14, and 12.

Contact reliability is rated at one incorrect switching operation per 100 million cycles at 17 V, 1 mA, so it's suitable for dry-circuit PLC inputs where low-level switching is the norm. Shock resistance is 10g / 5 ms and 5g / 10 ms — typical for contactors mounted on machine frames or near vibrating conveyor drives.

Frequently asked questions

What are the key contact ratings for this auxiliary contactor?

The contacts are rated 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. It also carries 1 A at 110 V and 0.27 A at 220 V for DC control circuits.

What is the physical size and mounting method?

It's 45 mm wide, 57.5 mm tall, and 72 mm deep, fitting the S00 frame. Mounts via screw or snap-on onto DIN rail with +/-180° rotation and +/-22.5° tilt possible.

What compliance documentation is available?

The part is RoHS-compliant per the substance prohibition date of July 1, 2006. It carries IP20 front protection and 6 kV surge voltage resistance, meeting IEC 60947-5-1 requirements. Specific UL/CSA certifications would be on the nameplate — confirm with an RFQ if you need the exact listing number.

MPN
3RH1122-1BB40-ZW98