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Siemens 3RT1026-1AK64 — Contactors

Siemens 3RT1026-1AK64 SIRIUS Power Contactor, S0 Size, 11 kW

MPN3RT1026-1AK64

Siemens SIRIUS 3RT1026-1AK64 power contactor, size S0, screw-type terminals, 11 kW rated power at 400 V AC-3, 45 mm width, snap-on 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

3RT1026-1AK64 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AK64 — Ratings & Performance
ParameterValue
Rated operational current, AC-4 @ 400 V15.5 A
Rated value @ 400 V3 A
Rated value @ 500 V11 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
3RT1026-1AK64 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz110 V
3RT1026-1AK64 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AK64 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 100 A
Short-circuit coordination type 2, fusefuse gL/gG: 35 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1026-1AK64 — 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
3RT1026-1AK64 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AK64 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1AK64 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

The same 11 kW rating at 690 V means it can serve higher-voltage motor circuits without derating the power throughput. The contactor carries a mechanical service life of 10 million operations, which suits applications with frequent switching cycles like conveyor systems or pump controls.

For type 2 coordination (no weld after a short circuit), the upstream fuse must be gL/gG rated at 35 A. For type 1 coordination (device may be damaged but no fire risk), a 100 A gL/gG fuse is the limit. This matters when the contactor sits in a panel with a high-fault-capacity bus. The auxiliary contact block provides 2 instantaneous contacts, which is enough for a basic feedback circuit to a PLC or a holding contact for the coil.

Width is 45 mm, height 85 mm, depth 140 mm. Side-by-side mounting is permitted with zero spacing — the 6 mm side clearance listed is for heat dissipation when mounted individually, but the contactor is designed for zero-gap grouping on the rail. Main circuit terminals accept 2x (1 to 2.5 mm²) or 2x (2.5 to 6 mm²) stranded, or up to 2x 10 mm² solid. The auxiliary circuit terminals take 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid, with a maximum of 2x (0.75 to 4 mm²). AWG equivalents are 2x (16 to 12) or 2x (14 to 10) for main, and 1x 8 for a single larger conductor.

Frequently asked questions

What is the mounting footprint and terminal type?

The contactor is 45 mm wide, 85 mm high, and 140 mm deep. It mounts on a 35 mm DIN rail per EN 50022 via screw or snap-on clip. Main circuit connections are screw-type terminals.

Can this contactor be mounted side-by-side with others?

Yes, side-by-side mounting is permitted. The 6 mm side clearance listed is for individual mounting; zero-gap grouping on the rail is allowed.

MPN
3RT1026-1AK64