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Siemens 3RH1122-1BF40-ZX95 — Contactors

Siemens 3RH1122-1BF40-ZX95 SIRIUS Aux Contactor, 110 V Coil,

MPN3RH1122-1BF40-ZX95

Siemens SIRIUS auxiliary contactor, 3RH1122-1BF40-ZX95, size S00, 110 V DC coil, 2 NO + 2 NC contacts, 10 A at 24 V, screw and snap-on mounting, IP20 front, current production.

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

3RH1122-1BF40-ZX95 — Identification
ParameterValue
Contactor frame sizeS00
3RH1122-1BF40-ZX95 — 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
3RH1122-1BF40-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1122-1BF40-ZX95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1122-1BF40-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)
Mounting methodscrew and snap-on mounting
3RH1122-1BF40-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1122-1BF40-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1122-1BF40-ZX95 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

It carries 2 normally-open and 2 normally-closed instantaneous contacts, with a 110 V DC coil that draws 3.2 W closing and holding power. The contactor is rated for 10 A at 24 V, 1 A at 110 V, and derates to 0.27 A at 220 V and 6 A at 230 V — covering both low-voltage control loops and higher-voltage interlock circuits. The IP20 front protection keeps panel-side fingers safe during maintenance.

Solid connections accept 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm² — spring-cage terminals would be faster, but the screw clamp holds well under vibration. Depth of 72 mm leaves room for front-accessible wiring without crowding the gland plate.

Mechanical life is typical 30 million operations. Shock resistance is 10g at 5 ms and 5g at 10 ms, adequate for most conveyor and pump panels.

Frequently asked questions

What are the key ratings for 3RH1122-1BF40-ZX95?

The coil is 110 V DC, 3.2 W. Contacts are 2 NO + 2 NC, rated 10 A at 24 V, 1 A at 110 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. Surge voltage resistance is 6 kV, pollution degree 3.

Where can I buy 3RH1122-1BF40-ZX95 and how is it quoted?

This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time against your quantity and delivery window.

What is the closest functional alternative to 3RH1122-1BF40-ZX95?

The 3RH2122-1BW40 is a size S00 auxiliary contactor with similar contact configuration but a different coil voltage (24 V DC). It shares the same mounting footprint and terminal capacity, so it can drop into a panel wired for the 3RH1122-1BF40-ZX95 if the coil supply is changed. The 3RH2122-1BA40 uses a 110 V AC coil instead of DC.

Will 3RH1122-1BF40-ZX95 fit a panel designed for 3RH2122-1BW40?

Yes — both are size S00 with identical 45 mm width, 57.5 mm height, and 72 mm depth, same screw/snap-on mounting. The only difference is the coil voltage (110 V DC vs 24 V DC), so the wiring must match the coil supply.

MPN
3RH1122-1BF40-ZX95