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Siemens 3RT2025-2AD20-1AA0 — Contactors

Siemens 3RT2025-2AD20-1AA0 SIRIUS S0 Power Contactor, 24 VDC

MPN3RT2025-2AD20-1AA0
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Siemens SIRIUS, power contactor, size S0, 3RT2025-2AD20-1AA0, 24 VDC coil, spring-type terminals, 10 A at 24 V, 3 hp at 230 V, screw and snap-on mounting onto 35 mm DIN rail.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT2025-2AD20-1AA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT2025-2AD20-1AA0 — 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
3RT2025-2AD20-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.25
Rated value @ 50 Hz42 V
3RT2025-2AD20-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2025-2AD20-1AA0 — 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)
3RT2025-2AD20-1AA0 — 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 standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2025-2AD20-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2025-2AD20-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2025-2AD20-1AA0 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth97 mm
3RT2025-2AD20-1AA0 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

DIN-rail footprint and panel clearance

Depth is 97 mm, height 102 mm. That 6 mm side gap is tighter than the 10 mm on other axes — when packing multiple contactors side-by-side, that's the dimension to watch for heat dissipation and wiring access.

Wire termination and operating cycle limits

Main circuit terminals accept solid or stranded wire from 1 to 10 mm², and up to 2x (0.5 to 2.5 mm²) for the auxiliary circuit. Maximum operating cycles per hour: 1,000 for AC-1, AC-2, AC-3, and AC-3e duty; drops to 300 for AC-4 (plugging/reversing).

Frequently asked questions

Where can I buy 3RT2025-2AD20-1AA0 and get a price?

This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) for current availability and pricing — confirmed at quote time, not before.

What is the depth of 3RT2025-2AD20-1AA0?

The depth is 97 mm. Combined with the 45 mm width and 102 mm height, it fits a standard S0 contactor footprint on 35 mm DIN rail.

What wire sizes does 3RT2025-2AD20-1AA0 accept?

Main terminals accept solid or stranded wire from 1 to 10 mm². Auxiliary terminals accept up to 2x (0.5 to 2.5 mm²) solid or stranded.

Will 3RT2025-2AD20-1AA0 drop into a panel specified around 3RT2036-1AC20-ZX95?

Both are S0-size contactors on the same 45 mm DIN-rail footprint, so the mechanical fit is identical — same panel cutout, same rail spacing, same clearance requirements. The difference is in the coil voltage and terminal type: this unit uses a 24 VDC coil with spring-type terminals, while the ZX95 variant uses a different coil voltage and screw terminals. Verify the coil supply before swapping.

MPN
3RT2025-2AD20-1AA0