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Siemens 3RT2026-1BW44 — Contactors

Siemens SIRIUS 3RT2026-1BW44 Power Contactor, S0 Frame, 48 V

MPN3RT2026-1BW44
Active

Siemens SIRIUS power contactor, 3RT2026-1BW44, S0 frame, 48 V DC coil, screw-type terminals, 3-pole, rated operational current 1.1 A at 400 V AC-3.

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

3RT2026-1BW44 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-1BW44 — 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 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V3 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2026-1BW44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2026-1BW44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-1BW44 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2026-1BW44 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2026-1BW44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-1BW44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-1BW44 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth151 mm

Product details

Its 48 V DC coil with screw-type terminals makes it a direct fit for panels where a 48 VDC control bus is already in place — common in older European machine builds or sites running a dedicated 48 VDC safety/control supply.

The headline rating is 1.1 A at 400 V AC-3 (full-scale value), which is the current it can switch for standard squirrel-cage motors during starting and running — that's a small motor, roughly 0.37 kW at 400 V three-phase. For DC breaking, the contactor is rated 6 A at 24 V, 2 A at 48 V, and 0.3 A at 220 V; these figures govern its use in DC load circuits, not the coil supply. The mechanical life is 10 million operations typical, and the maximum switching frequency varies by duty: 1000 cycles/hour for AC-1 (resistive), 750 for AC-2 and AC-3 (motor starting/running), and 250 for AC-4 (plugging/inching). If your application involves frequent reversing or inching, the AC-4 limit of 250 cycles/hour is the binding constraint — don't exceed it.

Frequently asked questions

What is the depth of this contactor?

The depth is 151 mm.

What solid wire size does it accept?

It accepts solid conductors from 1 to 10 mm².

Will 3RT2026-1BW44 drop into a panel specified for 3RT2026-1FB44-3MA0?

Both are S0 frame contactors with the same mounting footprint on 35 mm DIN rail, so the physical swap is straightforward. The key difference is the coil voltage: 3RT2026-1BW44 has a 48 V DC coil, while 3RT2026-1FB44-3MA0 uses a different coil voltage. Verify your control circuit voltage before substituting.

What compliance documentation is available for this part?

As a standard Siemens SIRIUS catalog item, it carries CE marking and is designed to meet relevant IEC/EN standards for contactors. Specific RoHS, REACH, and UL documentation can be provided upon request through the sourcing channel.

MPN
3RT2026-1BW44