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Siemens 3RT2025-1AC24 — Contactors

Siemens 3RT2025-1AC24 SIRIUS Power Contactor, Size S0, 24 VA

MPN3RT2025-1AC24
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Siemens SIRIUS power contactor, 3RT2025-1AC24, Size S0, 24 VAC coil, screw-type terminals, 45 mm width, screw and snap-on mounting onto 35 mm DIN rail.

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

3RT2025-1AC24 — Identification
ParameterValue
Contactor frame sizeS0
3RT2025-1AC24 — 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 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2025-1AC24 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz24 V
3RT2025-1AC24 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2025-1AC24 — 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)
3RT2025-1AC24 — 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
3RT2025-1AC24 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2025-1AC24 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2025-1AC24 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth141 mm
3RT2025-1AC24 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

It uses a 24 VAC magnet coil with screw-type terminals for the coil connection. The contactor is rated for AC-3 duty switching at up to 1,000 operating cycles per hour, which covers standard three-phase induction motor starts across conveyors, pumps, and fans.

The 45 mm width and 85 mm height fit standard panel layouts. The Size S0 frame means it shares the same footprint as other S0 contactors and overload relays in the SIRIUS family.

The 24 VAC coil draws 0.25 A at 50 Hz and 0.28 A at 60 Hz — check your control transformer sizing, especially if multiple contactors pick up simultaneously. The screw-type main terminals accept solid or stranded wire from 1 to 10 mm², and the coil terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

Frequently asked questions

What is the depth of this contactor?

The depth is 141 mm.

What wire sizes does the main terminal accept?

The screw-type main terminals accept solid or stranded wire from 1 to 10 mm².

Will the 3RT2025-1AC24 drop into a panel specified for 3RT2025-1AP04-ZX95?

Both are Size S0 SIRIUS contactors with the same mounting footprint on 35 mm DIN rail, so the mechanical fit is identical. The difference is the coil voltage — 3RT2025-1AC24 uses 24 VAC, while 3RT2025-1AP04-ZX95 uses a different coil voltage. Check the coil rating before swapping.

MPN
3RT2025-1AC24