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Siemens 3RT1026-1AH04 — Contactors

Siemens 3RT1026-1AH04 SIRIUS Power Contactor, S0, 11 kW at 6

MPN3RT1026-1AH04

Siemens SIRIUS power contactor, size S0, 3-pole, 3 NO main contacts, screw-type terminals, 11 kW rated power at 690 V AC-3, snap-on mounting.

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

3RT1026-1AH04 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AH04 — 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
3RT1026-1AH04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz48 V
3RT1026-1AH04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AH04 — 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
3RT1026-1AH04 — 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
3RT1026-1AH04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AH04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1AH04 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth140 mm

Product details

Termination and wiring

Main circuit terminals are screw-type, accepting solid conductors from 2x (0.5 to 1.5 mm²) up to 2x (0.75 to 4 mm²), with a maximum of 2x 4 mm² per clamp. For stranded wire, the range is 2x (1 to 2.5 mm²) up to 2x (2.5 to 6 mm²), max 2x 10 mm². AWG equivalents are 2x (16 to 12) and 2x (14 to 10), with a single 8 AWG maximum. This covers typical motor feeder cables up to about 4 mm² for the S0 frame. The terminal area itself is rated IP00, meaning the wiring compartment is not touch-safe when the panel door is open — standard for this class of contactor.

For Type 1 coordination (contactor may need replacement after a fault), the fuse can be up to 100 A gL/gG. This matters when you're coordinating with a motor protection circuit breaker or selecting a backup fuse for a branch circuit.

Frequently asked questions

What are the key dimensions of the 3RT1026-1AH04?

Width is 45 mm, height is 85 mm, and depth is 140 mm. These dimensions match the S0 frame size and allow side-by-side mounting on DIN rail.

What conductor sizes does the 3RT1026-1AH04 accept?

Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 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), single 8 AWG maximum.

What compliance documentation is available for the 3RT1026-1AH04?

As a standard Siemens SIRIUS product, it carries CE marking for the European market and is designed to meet relevant IEC/EN standards including EN 60947-4-1 for contactors. Specific declarations (RoHS, REACH) are available through the manufacturer's documentation portal.

MPN
3RT1026-1AH04