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Siemens 3RT1034-1BE40 — Contactors

Siemens 3RT1034-1BE40 SIRIUS Power Contactor, S2 Size, AC-3

MPN3RT1034-1BE40

Siemens SIRIUS 3RT1034-1BE40 power contactor, S2 size, screw-type terminals, AC-3 18.5 kW at 400 V, 55 mm width, 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

3RT1034-1BE40 — Identification
ParameterValue
Contactor frame sizeS2
3RT1034-1BE40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V29 A
Rated value @ 400 V3 A
Rated value @ 500 V18.5 kW
Rated value @ 690 V10 kW
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1034-1BE40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1034-1BE40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1034-1BE40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 125 A
Short-circuit coordination type 2, fusefuse gL/gG: 63 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1034-1BE40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded2x (0.75 ... 16 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 onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1034-1BE40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1034-1BE40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1034-1BE40 — Mechanical
ParameterValue
Width55 mm
Height112 mm
Depth130 mm

Product details

For AC-2 applications like slip-ring motors, it is rated at 15 kW at 400 V, and for AC-4 reversing or plugging duty, it carries 29 A at 400 V — the most demanding switching category, where the contactor makes and breaks stalled-rotor current.

At 55 mm wide, 112 mm tall, and 130 mm deep, it leaves room for adjacent devices — side-by-side mounting is supported, which helps fill factor on a crowded DIN rail.

The front face carries IP20 finger protection; the terminals are IP00, meaning the wiring zone is open and requires enclosure-level protection. The part is RoHS-compliant per the substance prohibition date of May 1, 2012, and carries a mechanical life of 10 million operations typical.

Frequently asked questions

What are the key AC ratings for this contactor?

AC-3 motor rating is 18.5 kW at 400 V. AC-2 rating is 15 kW at 400 V. AC-4 plugging/reversing rating is 29 A at 400 V. Maximum operating frequency varies by duty: 1200 cycles/hour for AC-1, 750 for AC-2, 1000 for AC-3, and 250 for AC-4.

What is the physical size and mounting method?

The contactor is 55 mm wide, 112 mm high, and 130 mm deep. It mounts via screw or snap-on onto a 35 mm DIN rail per EN 50022, and side-by-side mounting is permitted.

What compliance documentation is available?

The part is RoHS-compliant with a substance prohibition date of May 1, 2012. It is rated for pollution degree 3 and carries IP20 front protection.

MPN
3RT1034-1BE40