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Siemens 3RT1025-1BE44 — Contactors

Siemens 3RT1025-1BE44 SIRIUS Power Contactor, S0, 24 VDC, 7.

MPN3RT1025-1BE44

Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw terminals, 7.5 kW at 400 V AC-2, 15.5 A AC-4, DIN rail mount, 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

3RT1025-1BE44 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1BE44 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V10 kW
Rated value @ 690 V11 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
3RT1025-1BE44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1025-1BE44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1BE44 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1025-1BE44 — 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 (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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
3RT1025-1BE44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1BE44 — Environmental
ParameterValue
Installation altitude, max.2 000 m
3RT1025-1BE44 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth150 mm

Product details

Rated operating range on the coil is 0.8 to 1.1 times the rated value, meaning the coil holds in from about 19.2 V to 26.4 V DC. For motor duty, the contactor is rated 7.5 kW at 400 V in AC-2 (slip-ring motor starting) and 15.5 A at 400 V in AC-4 (plugging/inching). That AC-4 figure governs the real-world life when the contactor sees frequent reversing or jogging — the AC-2 rating is for less demanding starts.

Mounting and wiring in the panel

The contactor is 85 mm tall and 150 mm deep. Main circuit terminals accept solid conductors from 2x (0.5 to 1.5 mm²) up to max 2x (0.75 to 4 mm²), or stranded from 2x (1 to 2.5 mm²) up to max 2x 10 mm². Auxiliary terminals take 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded. That covers most panel wiring up to 4 mm² for power and 1.5 mm² for control.

Short-circuit coordination and ambient limits

This matters when specifying the branch circuit protection in a UL or IEC panel. That suits industrial environments with dust, oil mist, or condensation — typical for conveyor zones or machine tool cells.

MPN
3RT1025-1BE44