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Siemens 3RT1025-1AU60 — Contactors

Siemens 3RT1025-1AU60 SIRIUS Power Contactor, Size S0, 3-Pol

MPN3RT1025-1AU60

Siemens SIRIUS power contactor, Size S0, 3-pole NO, 15.5 A AC-4 at 400 V, 7.5 kW AC-2, screw terminals, DIN rail snap-on, 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

3RT1025-1AU60 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1AU60 — Ratings & Performance
ParameterValue
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
3RT1025-1AU60 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RT1025-1AU60 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1AU60 — 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
3RT1025-1AU60 — Connection & Mounting
ParameterValue
Main 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, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1025-1AU60 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1AU60 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-1AU60 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

At 690 V it's rated 11 kW, so it covers 690 V line-fed motors up to that power. The contactor snaps onto a 35 mm DIN rail per DIN EN 50022, and the screw-type terminals on the main circuit accept up to 2x 10 mm² or 1x 8 AWG stranded. Front side is IP20, so it's protected against finger contact in the panel; the terminals themselves are IP00, meaning they're live when the panel door is open. The 91 mm depth and 45 mm width mean it fits standard S0 slot spacing on a DIN rail; side-by-side mounting is allowed with no derating down to 6 mm spacing between units.

Coordination and protection — what the fuse ratings tell you

That's the difference between protecting the contactor itself versus just clearing the fault. In a panel where you want to avoid pulling the contactor after a short, spec the 25 A fuse.

The S0 frame width of 45 mm and depth of 91 mm fit standard enclosure layouts.

Frequently asked questions

Will 3RT1025-1AU60 drop into a panel specified around 3RT1023-1AL20?

Both are Size S0 frame contactors with the same 45 mm width and DIN rail mounting, so the mechanical footprint is the same. The main difference is the coil voltage and switching ratings — verify the coil voltage matches your control circuit and that the AC-4/AC-2 current ratings cover your motor load before swapping.

What compliance documentation does Siemens provide for 3RT1025-1AU60?

As a standard SIRIUS catalog item, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1. RoHS and REACH declarations are available from Siemens documentation. UL/CSA listings are typical for the SIRIUS line but should be confirmed against the specific variant.

MPN
3RT1025-1AU60