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Siemens 3RT1026-1BE44 — Contactors

Siemens 3RT1026-1BE44 SIRIUS Power Contactor, S0, 24 VDC Coi

MPN3RT1026-1BE44

Siemens SIRIUS power contactor, 3RT1026-1BE44, S0 frame size, 24 VDC coil, screw terminals, 45 mm width, IP20 front.

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

3RT1026-1BE44 — Identification
ParameterValue
Contactor frame sizeS0
3RT1026-1BE44 — 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
3RT1026-1BE44 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1026-1BE44 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1026-1BE44 — 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
3RT1026-1BE44 — 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
3RT1026-1BE44 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1026-1BE44 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1026-1BE44 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth150 mm

Product details

For straight across-the-line starting (AC-3), the motor power rating at 400 V is not explicitly listed here, but the AC-4 figure gives you the worst-case thermal limit for high-stress cycling. The AC-12 maximum operating current is 10 A, which covers resistive loads like heaters or lighting banks where the inrush is minimal. The difference between AC-12 and AC-4 matters: you wouldn't size this contactor for a 10 A motor load — the AC-4 derating is real.

The magnet coil is 24 VDC, with a closing power and holding power both rated at 5.4 W. That's a continuous-duty coil — it stays energized without overheating, so no need for a separate economizer circuit. The DC coil also means no hum and no inrush spike that can brown out a 24 VDC bus shared with PLC outputs.

Short-circuit coordination and wiring

Panel builders specifying a common bus should note the 35 A limit if they want to avoid replacing the contactor after a short. Main circuit terminals accept screw-type connections: solid or stranded wire from 2x (0.5 to 1.5 mm²) up to a maximum of 2x (0.75 to 4 mm²). For AWG, that's 2x (16 to 12) up to 1x 8. The 45 mm width and 85 mm height leave room for finger-friendly wiring in a crowded enclosure.

The terminals themselves are rated IP00, so the contactor must be installed inside a cabinet or enclosure that provides the overall IP rating. Side-by-side mounting is allowed with a 6 mm gap at the side. No derating is required for side-by-side placement at rated current, but the 6 mm clearance ensures natural convection cooling isn't blocked.

Frequently asked questions

What is the closest functional alternative to 3RT1026-1BE44?

The peer 3RT1015-1BB42 is a smaller S00 frame contactor with a lower AC-3 rating. It will not drop into the same footprint — the S0 frame has a 45 mm width versus S00's 45 mm width but different depth and terminal layout. For a direct functional replacement at the same frame size and coil voltage, stick with the 3RT1026-1BE44.

What are the key ratings for this contactor?

AC-4 at 400 V: 15.5 A. AC-12 maximum: 10 A. Coil: 24 VDC, 5.4 W holding. Motor power at 500 V and 690 V: 11 kW each. Dimensions: 45 mm wide, 85 mm high, 150 mm deep.

What compliance documentation is available for this part?

The part carries a DIN EN 81346-2 reference code Q. Standard Siemens SIRIUS documentation includes CE, UL, CSA, and RoHS declarations — these are available through the manufacturer's support portal. Specific certification marks are not listed in this record, but the SIRIUS line is typically UL/CSA listed for the North American market.

MPN
3RT1026-1BE44