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Siemens 3RT1026-1AL20-ZW98 — Contactors

Siemens SIRIUS 3RT1026-1AL20-ZW98 Power Contactor, S0, 11 kW

MPN3RT1026-1AL20-ZW98

Siemens SIRIUS 3RT1026-1AL20-ZW98 power contactor, S0 frame size, 11 kW AC-2 at 400 V, 45 mm wide, screw terminals, current production.

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

3RT1026-1AL20-ZW98 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1AL20-ZW98 — 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
3RT1026-1AL20-ZW98 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT1026-1AL20-ZW98 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1AL20-ZW98 — 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
3RT1026-1AL20-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
3RT1026-1AL20-ZW98 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1AL20-ZW98 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1AL20-ZW98 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth91 mm

Product details

Rated for AC-2 duty at 11 kW on a 400 V supply, this contactor handles wound-rotor motor applications where starting current stays moderate.

What the ratings mean in the panel

The S0 frame carries a mechanical life of 10 million operations, which is the contactor's structural endurance before wear-out — not the electrical life under load, which will be lower depending on the switching duty. For AC-4 reversing duty at full rated current, expect the electrical life to be a fraction of that figure; plan spares accordingly if the application cycles frequently under load. Short-circuit coordination is specified with two levels: Type 1 coordination allows the contactor to be damaged but safe to operate after clearing a fault, using a 100 A gL/gG fuse. Type 2 coordination, which keeps the contactor usable after a fault, requires a 35 A gL/gG fuse. If the panel spec demands Type 2 — typical for critical processes where downtime for contactor replacement is unacceptable — the upstream fuse must be limited to 35 A. If you are switching an inductive load like a small contactor coil at 230 V, stay under 6 A or add a snubber.

Wiring and integration notes

The 6 mm clearance to grounded metal on the side is the minimum for the arc chamber; respect that if mounting near a panel wall or another device's live parts.

Frequently asked questions

What is the closest functional alternative to this contactor?

The 3RT1023-1AL20 is a direct S0-frame sibling in the same SIRIUS family, sharing the same 45 mm width and DIN-rail mounting. The main difference is the power rating: the 3RT1023 is rated for lower motor currents. Verify the load current against the 3RT1023's AC-2/AC-3 ratings before substituting — the 3RT1026-1AL20-ZW98 carries higher ratings for the same footprint.

What compliance documentation is available for this part?

As a Siemens SIRIUS product, it carries CE marking for the European market and is designed to meet IEC 60947-4-1 for contactors. UL and CSA listings are standard for the SIRIUS range, though the specific order code suffix (ZW98) may indicate a special version — verify the marking on the device label for your jurisdiction.

Will this contactor drop into a panel wired for a 3RT1023-1AL20?

Yes, the 3RT1026-1AL20-ZW98 shares the same S0 frame, 45 mm width, DIN-rail mounting, and screw-terminal layout. No rewiring of the panel or busbar is needed for the mechanical fit. However, the higher current rating means the upstream protection (fuse or breaker) must be sized for the 3RT1026's full-load current, not the 3RT1023's lower rating.

MPN
3RT1026-1AL20-ZW98