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Siemens 3RT1025-1AG64 — Contactors

Siemens 3RT1025-1AG64 SIRIUS Power Contactor, S0, 7.5 kW AC-

MPN3RT1025-1AG64

Siemens SIRIUS power contactor, size S0, 3RT1025-1AG64, 7.5 kW at 400 V AC-2, 15.5 A AC-4, screw-type terminals, 45 mm width, DIN rail mount.

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

3RT1025-1AG64 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1AG64 — 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 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
3RT1025-1AG64 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz100 V
3RT1025-1AG64 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1AG64 — 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
3RT1025-1AG64 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control 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, solid or stranded2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 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
3RT1025-1AG64 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1AG64 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Installation altitude, max.2 000 m
3RT1025-1AG64 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

It's rated for 7.5 kW at 400 V in AC-2 duty (slip-ring motor starting) and 15.5 A at 400 V in AC-4 duty (plugging/inching), so it handles the high inrush and frequent switching of reversing or jogging applications. The coil is wound for 100 V at 50 Hz or 100–110 V at 60 Hz, with an operating range of 0.8–1.1 times rated voltage at 50 Hz and 0.85–1.1 at 60 Hz — meaning it holds in through brownouts down to about 80 V at 50 Hz.

Side-by-side mounting is permitted with no derating gap.

Main and auxiliary circuits use screw-type terminals. Main contacts accept solid 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²), or stranded 2x (1–2.5 mm²), 2x (2.5–6 mm²), max 2x 10 mm². AWG equivalents: 2x (16–12), 2x (14–10), 1x 8 for main; 2x (20–16), 2x (18–14), 1x 12 for auxiliary.

Protection and coordination

This lets you balance protection level against fuse size depending on the upstream breaker and downstream motor thermal protection.

Frequently asked questions

What is the closest functional alternative to the 3RT1025-1AG64?

The 3RT1015-1AG61 is a smaller S0 frame contactor with lower ratings — it won't drop into the same panel without rewiring if your load requires the 7.5 kW AC-2 or 15.5 A AC-4 capacity of the 3RT1025-1AG64. The 3RT1025-1AG64 is the higher-rated sibling for heavier motor loads.

MPN
3RT1025-1AG64