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Siemens 3RT2025-1BB40 — Contactors

Siemens 3RT2025-1BB40 SIRIUS Contactor, S0, 24 VDC, 10 A

MPN3RT2025-1BB40
Active

Siemens SIRIUS power contactor, 3RT2025-1BB40, S0 frame, 24 VDC coil, 10 A at 24 V DC.

$125.61 – $230.43Ref. price · indicative, final on quote
Siemens 3RT2025-1BB40 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2025-1BB40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2025-1BB40 — 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
3RT2025-1BB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2025-1BB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2025-1BB40 — 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)
3RT2025-1BB40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2025-1BB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2025-1BB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2025-1BB40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

The 3RT2025-1BB40: Mounting options include screw fixing and snap-on onto 35 mm DIN rail per DIN EN 60715; it can be positioned with ±180° rotation on a vertical surface. Required clearances: 10 mm upward, 10 mm forward, 6 mm at the sides.

Mounting and Conductor Terminations

Auxiliary terminals handle 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²). Overall dimensions: 85 mm high, 45 mm wide, 107 mm deep. Coil termination is via screw-type terminals.

MPN
3RT2025-1BB40