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Siemens 3RT1026-3AB00 — Contactors

Siemens 3RT1026-3AB00 SIRIUS S0 Power Contactor, 3 NO, 11 kW

MPN3RT1026-3AB00

Siemens SIRIUS, S0 power contactor, 3RT1026-3AB00, 3 NO main contacts, 11 kW at 690 V AC-3, screw terminals, 45 mm width, 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

3RT1026-3AB00 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-3AB00 — 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
3RT1026-3AB00 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz24 V
3RT1026-3AB00 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-3AB00 — 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
3RT1026-3AB00 — 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
3RT1026-3AB00 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-3AB00 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-3AB00 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth90 mm

Product details

SIRIUS S0 power contactor — 3RT1026-3AB00

The Siemens 3RT1026-3AB00 is a SIRIUS S0-frame power contactor with three normally-open main contacts and no normally-closed main contacts, rated for 11 kW at both 500 V and 690 V in AC-3 duty.

For standard across-the-line starting (AC-3), the 11 kW at 690 V rating covers most 400 V and 690 V three-phase induction motors up to that power. The S0 frame size means the contactor occupies the same DIN-rail footprint as other S0 accessories (overload relays, auxiliary contact blocks), so panel layout stays consistent across a BOM. Type 2 coordination requires a 35 A gL/gG fuse upstream; Type 1 coordination allows a 100 A fuse. This matters for selectivity studies — if the panel's SCCR is built around Type 2, the 35 A limit is the binding constraint. The IP20 front face protects against finger contact during panel access; the terminals themselves are IP00, so the contactor must be mounted inside a closed enclosure.

Panel integration

Screw terminals accept 2x (0.25 to 2.5 mm²) solid or 2x (1 to 2.5 mm²) stranded, with a maximum of 2x 10 mm². For AWG, that's 2x (16 to 12) solid or 2x (14 to 10) stranded, up to 1x 8 AWG. Strip length and torque values follow the terminal marking on the contactor — no special tooling needed beyond a standard screwdriver.

Frequently asked questions

Where can I buy 3RT1026-3AB00 and what is the lead time?

We source the 3RT1026-3AB00 to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead time and price.

Will 3RT1026-3AB00 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Both are S0-frame SIRIUS contactors with the same 45 mm width and DIN-rail mounting, so the mechanical fit is identical. The 3RT1026-3AB00 carries 3 NO main contacts versus the 3RT1023-1AL20's configuration — verify the contact arrangement matches your circuit before swapping. Terminal type and wire ranges are the same screw-type design.

What is the AC-4 rating of 3RT1026-3AB00?

The AC-4 rating at 400 V is 15.5 A. This is the current limit for reversing or inching duty where the contactor makes and breaks the motor at full voltage.

What compliance documentation does Siemens provide for 3RT1026-3AB00?

As a SIRIUS series component, the 3RT1026-3AB00 carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1. UL and CSA listings are standard for the SIRIUS contactor range; confirm specific certification numbers on the nameplate or request the declaration of conformity with your RFQ.

MPN
3RT1026-3AB00