Skip to main content
Log in
Siemens 3RT1025-1AH24-1AA0 — Contactors

Siemens 3RT1025-1AH24-1AA0 SIRIUS Power Contactor, S0, 24 VD

MPN3RT1025-1AH24-1AA0

Siemens SIRIUS power contactor, S0 frame, 24 VDC coil, screw terminals, 7.5 kW at AC-2 400 V, 45 mm width, 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

3RT1025-1AH24-1AA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1AH24-1AA0 — 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
3RT1025-1AH24-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz48 V
3RT1025-1AH24-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1AH24-1AA0 — 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
3RT1025-1AH24-1AA0 — 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
3RT1025-1AH24-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1AH24-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-1AH24-1AA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

The Siemens 3RT1025-1AH24-1AA0 is a SIRIUS S0-frame power contactor with a 24 VDC coil, rated for motor switching in AC-2 duty at 7.5 kW / 400 V and AC-4 duty at 15.5 A / 400 V.

Motor duty and coordination

For AC-2 (slip-ring motor starting) the contactor handles 7.5 kW at 400 V; for AC-4 (plugging/inching) the rating is 15.5 A at the same voltage. Type 2 coordination requires a 25 A gL/gG fuse; Type 1 coordination allows up to 63 A gL/gG — the fuse choice governs whether the contactor survives a fault or just clears it.

IP20 on the front, IP00 at the terminals — keep live parts behind the panel door. Operating temperature range -25 to +60 °C, altitude up to 2 000 m, pollution degree 3.

Frequently asked questions

Who supplies 3RT1025-1AH24-1AA0 and how is it quoted for volume purchases?

It is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time.

What is 3RT1025-1AH24-1AA0's listed depth?

The depth is 140 mm.

Will 3RT1025-1AH24-1AA0 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Both are SIRIUS S0-frame contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. The 3RT1023-1AL20 uses a 230 VAC coil, while this part is 24 VDC — the coil supply and control wiring must match.

MPN
3RT1025-1AH24-1AA0