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Siemens 3RT1026-1BM44-1AA0 — Contactors

Siemens 3RT1026-1BM44-1AA0 SIRIUS Power Contactor, S0, 11 kW

MPN3RT1026-1BM44-1AA0

Siemens SIRIUS power contactor, S0 frame, 3RT1026-1BM44-1AA0, screw-type terminals, 11 kW at 400 V AC-2, 15.5 A AC-4, IP20 front, snap-on 35 mm DIN rail.

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

3RT1026-1BM44-1AA0 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1BM44-1AA0 — 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
3RT1026-1BM44-1AA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1026-1BM44-1AA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1BM44-1AA0 — 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
3RT1026-1BM44-1AA0 — 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
3RT1026-1BM44-1AA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1BM44-1AA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1BM44-1AA0 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth150 mm

Product details

Rated 11 kW at 400 V in AC-2 duty (slip-ring motors, soft-start applications) and 11 kW at both 500 V and 690 V, this contactor handles the common European motor voltages. For resistive loads (AC-12), it carries 10 A continuously. The screw-type main terminals accept up to 10 mm² stranded or 4 mm² solid conductors, with dual-wire capability for daisy-chaining.

Type 1 coordination (contactor may need replacement but the circuit is cleared) allows up to 100 A gL/gG. This matters when you're specifying upstream protection for a motor branch circuit.

Dimensions and Environment

Side-by-side mounting is allowed with a 6 mm gap to adjacent devices for heat dissipation. The terminal area is IP00 — safe inside an enclosure but not touch-safe open. Maximum operating altitude is 2000 m without derating, covering most installations.

Frequently asked questions

How do I get current pricing and availability for 3RT1026-1BM44-1AA0?

Submit an RFQ through this listing. Pricing and availability are confirmed at quote time through independent distribution channels.

What is 3RT1026-1BM44-1AA0's listed depth?

The depth is 150 mm, which fits standard 200 mm deep enclosures.

What conductor sizes does the main terminal accept?

Solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). Stranded: 2x (1–2.5 mm²), 2x (2.5–6 mm²), max 2x 10 mm². AWG equivalents: 2x (16–12), 2x (14–10), 1x 8.

Will 3RT1026-1BM44-1AA0 drop into a panel specified around 3RT1023-1AL20 without rewiring?

Both are S0-frame Siemens SIRIUS contactors with the same mounting footprint and terminal layout, so mechanical fit is identical. However, the 3RT1026-1BM44-1AA0 has a different coil voltage and higher current ratings — verify the coil rating matches your control circuit and the load current doesn't exceed the 3RT1023-1AL20's original rating before swapping.

MPN
3RT1026-1BM44-1AA0