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Siemens 3RT1025-1AP08-0MA0 — Contactors

Siemens 3RT1025-1AP08-0MA0 SIRIUS Power Contactor, S0 Frame,

MPN3RT1025-1AP08-0MA0

Siemens SIRIUS power contactor, 3RT1025-1AP08-0MA0, S0 frame, 3 NO main contacts, screw terminals, 45 mm width, 85 mm height, 140 mm depth, IP20 front, screw and snap-on mounting onto 35 mm DIN rail (DIN EN 50022).

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1025-1AP08-0MA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1AP08-0MA0 — 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
3RT1025-1AP08-0MA0 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1025-1AP08-0MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1AP08-0MA0 — 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
3RT1025-1AP08-0MA0 — 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
3RT1025-1AP08-0MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1AP08-0MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-1AP08-0MA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

SIRIUS S0 power contactor, 3 NO, screw terminals, 45 mm

It mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022, occupying 45 mm width, 85 mm height, and 140 mm depth. Front protection is IP20; the terminal area is IP00. Rated for motor loads: at AC-2 duty at 400 V it handles 7.5 kW; at AC-4 at 400 V the operating current is 15.5 A. For high-voltage motors, it supports 10 kW at 500 V and 11 kW at 690 V. DC switching ratings are voltage-dependent: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, and 6 A at 230 V. Pollution degree 3. The contactor is rated for 10 000 000 typical mechanical operations.

Solid and stranded wire capacities for the main circuit: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). For single or multi-stranded conductors: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), max 2x 10 mm². AWG equivalents: 2x (16 to 12), 2x (14 to 10), 1x 8. Type 2 coordination requires a 25 A gL/gG fuse. The contactor includes 2 auxiliary contacts (instantaneous).

Frequently asked questions

What is the closest functional second-source to 3RT1025-1AP08-0MA0?

The closest peer is 3RT1023-1AL20, which is also a SIRIUS S0 power contactor but with a different coil voltage and auxiliary contact configuration. The 3RT1025-1AP08-0MA0 uses a 3 NO main contact arrangement; verify coil ratings and auxiliary needs before substituting.

What are the main contact ratings for 3RT1025-1AP08-0MA0?

Three normally-open main contacts rated for AC-2 motor duty at 7.5 kW at 400 V, AC-4 at 15.5 A at 400 V, and motor power up to 11 kW at 690 V. DC switching: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V.

Where can I buy 3RT1025-1AP08-0MA0 and get current pricing?

This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation.

MPN
3RT1025-1AP08-0MA0