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Siemens 3RT7025-1AH05 — Contactors

Siemens 3RT7025-1AH05 SIRIUS Contactor, 3-Pole, AC Coil, S0

MPN3RT7025-1AH05

Siemens SIRIUS 3RT7025-1AH05, 3-pole contactor, S0 frame, AC coil, screw-type terminals, IP20 finger-safe.

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

3RT7025-1AH05 — Identification
ParameterValue
Contactor frame sizeS0
3RT7025-1AH05 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
3RT7025-1AH05 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.24
Rated value @ 50 Hz48 V
3RT7025-1AH05 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliabilityacceptability for PLC control (17 V, 5 mA)
3RT7025-1AH05 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG NH 3NA: 63 A
Short-circuit coordination type 2, fusegL/gG NH 3NA: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT7025-1AH05 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
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 standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT7025-1AH05 — Environmental
ParameterValue
Operating temperature range-10 ... +55 °C
Storage temperature range-25 ... +70 °C
Installation altitude, max.2 000 m
3RT7025-1AH05 — Mechanical
ParameterValue
Width55 mm
Height85.5 mm
Depth91 mm

Product details

SIRIUS 3RT7025-1AH05 — 3-Pole Contactor, AC Coil, S0 Frame

Rated for AC-3 duty up to 690 V, it switches 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — covering motor loads in the fractional-to-small-horsepower range. Auxiliary contacts are rated for PLC-level reliability (17 V, 5 mA), meaning they can switch low-energy signals without oxide-film issues.

The S0 footprint is 55 mm wide, 85.5 mm tall, and 91 mm deep — a compact block that fits standard panel layouts. Side-by-side mounting is allowed with no derating gap, so multiple contactors pack tightly on the rail.

For Type 2 coordination (minimal contact damage on fault), the required upstream fuse is a gL/gG NH 3NA: 25 A.

Frequently asked questions

What is the closest functional alternative to the 3RT7025-1AH05?

The 3RT7025-1AM00 is a peer variant — same S0 frame, same 3-pole AC-3 ratings — but with a different coil voltage. The 3RT7025-1AH05 uses an AC coil; the 1AM00 uses a different coil code. Verify coil compatibility before substituting.

What are the key ratings for the 3RT7025-1AH05?

AC-3 rated operational current: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. Rated insulation voltage 690 V. Coil draw: 0.82 W closing, 0.24 W holding. Auxiliary contacts rated for PLC-level signals (17 V, 5 mA).

What are the mounting dimensions of the 3RT7025-1AH05?

Width 55 mm, height 85.5 mm, depth 91 mm. Mounts on 35 mm DIN rail per EN 50022 via screw or snap-on.

What compliance documentation is available for the 3RT7025-1AH05?

The contactor carries IP20 finger-safe protection, pollution degree 3 rating, and surge voltage resistance of 6 kV. Standard Siemens SIRIUS documentation includes CE, UL, and CSA certifications — consult the product documentation for specific RoHS/REACH declarations.

MPN
3RT7025-1AH05