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Siemens 3RH1140-2BB40-ZW98 — Contactors

Siemens 3RH1140-2BB40-ZW98 SIRIUS Auxiliary Contactor, 24 V

MPN3RH1140-2BB40-ZW98

Siemens SIRIUS auxiliary contactor, size S00, 24 V DC coil, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front protection, 45 mm width.

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

3RH1140-2BB40-ZW98 — Identification
ParameterValue
Contactor frame sizeS00
3RH1140-2BB40-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
3RH1140-2BB40-ZW98 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH1140-2BB40-ZW98 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1140-2BB40-ZW98 — Connection & Mounting
ParameterValue
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting
3RH1140-2BB40-ZW98 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH1140-2BB40-ZW98 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH1140-2BB40-ZW98 — Mechanical
ParameterValue
Width45 mm
Height60 mm
Depth73 mm

Product details

Contacts are rated 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V, which covers most control-circuit switching in a 400 V panel. The 45 mm width and screw-and-snap-on mounting mean it clips directly onto a DIN rail alongside a SIRIUS contactor or motor starter, sharing the same bus system.

Screw and snap-on mounting onto a DIN rail.

Four instantaneous NO contacts — no delayed, lagging, or make-before-break variants on this order code. Rated operational currents: 10 A at 24 V, 1 A at 110 V, 0.27 A at 220 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. The 6 kV rated surge voltage resistance gives confidence for switching in industrial networks with transient exposure. Contact reliability is specified as one incorrect switching operation per 100 million at 17 V, 1 mA — a solid figure for PLC-level signal switching.

Screw terminals accept 2x (0.25 to 2.5 mm²) solid or stranded conductors, or 2x (24 to 14 AWG). The dual-conductor capacity is useful for daisy-chaining control voltage across multiple devices without extra terminal blocks. Strip length and torque values follow standard SIRIUS practice for size S00.

Frequently asked questions

Where can I buy 3RH1140-2BB40-ZW98?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the difference between 3RH1140-2BB40-ZW98 and 3RH2140-1BP40?

The 3RH2140-1BP40 is a different SIRIUS auxiliary contactor variant — it carries a different contact configuration and coil voltage. The 3RH1140-2BB40-ZW98 has 4 NO instantaneous contacts with a 24 V DC coil, while the 3RH2140-1BP40 uses a different contact arrangement. Both share the S00 footprint and snap-on mounting, so they are mechanically interchangeable in the same DIN-rail slot, but the contact wiring differs.

What compliance documentation does Siemens provide for 3RH1140-2BB40-ZW98?

The part carries RoHS compliance with a substance prohibition date of July 1, 2006. Pollution degree 3 rating indicates suitability for industrial environments. Standard Siemens SIRIUS documentation includes a CE declaration and manufacturer's declaration for the EU low-voltage directive.

MPN
3RH1140-2BB40-ZW98