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Siemens 3RH1140-1BB40-ZX95 — Contactors

Siemens 3RH1140-1BB40-ZX95 SIRIUS Auxiliary Contactor, 24 V

MPN3RH1140-1BB40-ZX95

Siemens SIRIUS auxiliary contactor, 24 V DC coil, 4 NO instantaneous contacts, Size S00, 45 mm width, 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

3RH1140-1BB40-ZX95 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-1BB40-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
3RH1140-1BB40-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-1BB40-ZX95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-1BB40-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
3RH1140-1BB40-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-1BB40-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1140-1BB40-ZX95 — Mechanical
ParameterValue
Width45 mm
Height57.5 mm
Depth72 mm

Product details

Auxiliary contactor for control-circuit switching

It's built into the Size S00 footprint — 45 mm wide, 57.5 mm tall, 72 mm deep — and mounts via screw or snap-on onto DIN rail.

The four NO contacts are instantaneous — no make-before-break or delayed switching here, so they close and open in step with the coil. Rated 10 A at 24 V DC covers most PLC output and relay interface loads; at 230 V AC it's still good for 6 A, and at 400 V AC it handles 3 A. The 6 kV surge voltage resistance (rated value) gives it a solid margin for industrial control panels where transient spikes are common. Coil holds at 24 V DC nominal, draws 3.2 W during both pick-up and hold — no inrush spike to budget for.

Frequently asked questions

What are the key ratings for 3RH1140-1BB40-ZX95?

It has a 24 V DC coil, four instantaneous NO contacts rated 10 A at 24 V, and a surge voltage resistance of 6 kV. Size S00 footprint: 45 mm wide, 57.5 mm tall, 72 mm deep.

MPN
3RH1140-1BB40-ZX95