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Siemens 3RT1025-3AL16 — Contactors

Siemens 3RT1025-3AL16 SIRIUS Power Contactor, S0, 230 V 60 H

MPN3RT1025-3AL16

Siemens SIRIUS 3RT1025-3AL16 power contactor, size S0, 3-pole, 230 V 60 Hz coil, screw-type terminals, 10 A AC-12, 7.5 kW AC-2 at 400 V.

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

3RT1025-3AL16 — Identification
ParameterValue
Contactor frame sizeS0
3RT1025-3AL16 — 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
3RT1025-3AL16 — Control & Coil
ParameterValue
Control supply voltage typeAC
3RT1025-3AL16 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1025-3AL16 — 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
3RT1025-3AL16 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Side-by-side mountingYes
3RT1025-3AL16 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1025-3AL16 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1025-3AL16 — Mechanical
ParameterValue
Width65 mm
Height85 mm
Depth91 mm

Product details

It carries three main NO contacts and one auxiliary contact block with 2 contacts (NO/NC configurable per the block). The coil is rated for 230 V at 60 Hz, with an operating range of 0.8 to 1.1 times the rated voltage at that frequency. For motor duty, it is rated at 7.5 kW for AC-2 use at 400 V (slip-ring motors, wound-rotor) and 15.5 A for AC-4 at 400 V (plugging, inching). For resistive loads (AC-12), the maximum operating current is 10 A. At 500 V, the motor rating is 10 kW; at 690 V, it reaches 11 kW.

Side-by-side mounting is permitted with zero clearance — no derating required for adjacent units. Dimensions: 65 mm wide, 85 mm high, 91 mm deep. Main circuit terminals accept screw-type connections: solid conductors 2x (0.25 to 2.5 mm²), stranded 2x (1 to 2.5 mm²) or 2x (2.5 to 6 mm²), and up to 2x 10 mm² or 1x 8 AWG. The kit is complete with terminals and mounting hardware — no separate accessory pack needed.

For type 1 coordination (contactor may need replacement after fault), use gL/gG 63 A.

Frequently asked questions

What are the key ratings for this contactor?

The 3RT1025-3AL16 is a size S0 power contactor with a 230 V 60 Hz coil. For motor duty, it is rated at 7.5 kW AC-2 at 400 V and 15.5 A AC-4 at 400 V. For resistive loads, the maximum AC-12 current is 10 A. The main contacts are 3 NO, with an auxiliary contact block providing 2 additional contacts.

What is the mounting footprint and terminal capacity?

The contactor mounts on a 35 mm DIN rail (DIN EN 50022) and is 65 mm wide, 85 mm high, and 91 mm deep. Side-by-side mounting is allowed with no clearance. Main circuit terminals accept solid conductors 2x (0.25 to 2.5 mm²) and stranded up to 2x 10 mm² or 1x 8 AWG.

What fuse coordination is required?

For type 2 coordination (no damage to the contactor), use a gL/gG 25 A fuse upstream. For type 1 coordination (contactor may need replacement), use a gL/gG 63 A fuse.

MPN
3RT1025-3AL16