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Siemens 3RT1026-3XF40-0LA2 — Contactors

Siemens 3RT1026-3XF40-0LA2 SIRIUS Power Contactor, 110 VDC C

MPN3RT1026-3XF40-0LA2

Siemens SIRIUS power contactor, S0 size, 110 VDC coil with varistor surge suppression, screw terminals, 45 mm width.

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

3RT1026-3XF40-0LA2 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-3XF40-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
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 V3 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1026-3XF40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1026-3XF40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT1026-3XF40-0LA2 — 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
3RT1026-3XF40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1026-3XF40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-3XF40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Installation altitude, max.2 000 m
3RT1026-3XF40-0LA2 — Mechanical
ParameterValue
Width45 mm
Height119 mm
Depth100 mm

Product details

It carries a 110 VDC coil with an integrated varistor surge suppressor, and is rated for AC-4 duty at 15.5 A at 400 V — the figure that governs reversing or plug-stop applications where the contactor makes and breaks stalled-rotor current.

Switching capacity and coil

The 110 VDC coil pulls in at 70 % of rated voltage (77 V) and drops out below that threshold. Switching capacity varies by voltage: at 110 VDC it handles 1 A, at 220 VDC 0.3 A, and at 24 VDC 10 A — the DC load curve drops sharply with voltage, so verify the load's make/break current against the table. For AC motor duty, the AC-4 rating at 400 V is 15.5 A, which covers reversing or inching applications on motors up to roughly 7.5 kW.

Frequently asked questions

Where can I buy 3RT1026-3XF40-0LA2 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.

What is the AC-4 rating of this contactor?

The AC-4 rating at 400 V is 15.5 A, which governs reversing or plug-stop duty where the contactor switches stalled-rotor current.

Does this contactor have a built-in surge suppressor?

Yes, the design includes a varistor surge suppressor across the coil.

What compliance documentation is available for 3RT1026-3XF40-0LA2?

The part is RoHS-compliant per the substance prohibition date of 01.05.2012.

MPN
3RT1026-3XF40-0LA2