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Siemens 3RT2025-2FB40 — Contactors

Siemens 3RT2025-2FB40 SIRIUS Power Contactor, 24 VDC Coil, S

MPN3RT2025-2FB40
Active

Siemens SIRIUS power contactor, 3RT2025-2FB40, S0 frame, 24 VDC coil, spring-type terminals, 10 A DC-13 at 24 V.

$59.69Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT2025-2FB40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2025-2FB40 — 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 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V3 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2025-2FB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2025-2FB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2025-2FB40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
Short-circuit coordination type 2, fusegG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2025-2FB40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2025-2FB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2025-2FB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2025-2FB40 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

It carries a 24 VDC coil and is fitted with spring-type terminals for quick wiring. Its DC-13 rating at 24 V is 10 A, meaning it can switch inductive DC loads like contactor coils or solenoid valves up to that current. For reference, at 125 VDC the rating drops to 0.9 A, and at 220 VDC to 0.3 A. The contactor mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, with a width of 45 mm and a depth of 107 mm — the S0 frame is a compact footprint for panel layouts.

The spring-type terminals accept solid or stranded wire from 1 to 10 mm², or two conductors of 0.5 to 2.5 mm² each.

MPN
3RT2025-2FB40