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Siemens 3RT1025-1AL20-ZW98 — Contactors

Siemens 3RT1025-1AL20-ZW98 SIRIUS Power Contactor, S0, 230 V

MPN3RT1025-1AL20-ZW98

Siemens SIRIUS power contactor, size S0, 3RT1025-1AL20-ZW98, 230 V AC 50/60 Hz coil, screw-type terminals, 45 mm width, IP20 front protection.

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

3RT1025-1AL20-ZW98 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-1AL20-ZW98 — 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
3RT1025-1AL20-ZW98 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1025-1AL20-ZW98 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-1AL20-ZW98 — 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
3RT1025-1AL20-ZW98 — 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
3RT1025-1AL20-ZW98 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-1AL20-ZW98 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-1AL20-ZW98 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

The Siemens SIRIUS 3RT1025-1AL20-ZW98 is a size S0 power contactor with a 230 V AC 50/60 Hz coil, screw-type terminals for the main circuit, and a 45 mm wide body that snaps onto a 35 mm DIN rail per EN 50022. Rated for motor loads: 7.5 kW at 400 V in AC-2 duty, and 15.5 A at 400 V in AC-4 (reversing or inching).

Main circuit screw terminals accept 2x (1... 2.5 mm²) stranded or 2x (2.5... 6 mm²) solid, max 2x 10 mm². Control circuit terminals take 2x (0.5... 1.5 mm²) solid, 2x (0.75... 2.5 mm²) stranded, max 2x (0.75... 4 mm²). AWG equivalents: main 2x (16... 12) or 2x (14... 10), control 2x (20... 16) or 2x (18... 14).

Rated for operation up to 2000 m altitude without derating; above that, the dielectric strength and thermal dissipation need to be checked against the application.

Frequently asked questions

What is 3RT1025-1AL20-ZW98's listed depth?

The depth is 91 mm. Combined with the 45 mm width and 85 mm height, it fits standard S0 contactor spacing on a DIN rail.

MPN
3RT1025-1AL20-ZW98