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Siemens 3RT2026-2BF40 — Contactors

Siemens 3RT2026-2BF40 SIRIUS Power Contactor, 110 VAC Coil,

MPN3RT2026-2BF40
Active

Siemens SIRIUS power contactor, size S0, 110 VAC coil, spring-type terminals, 45 mm width, 107 mm depth.

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

3RT2026-2BF40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-2BF40 — 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 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2026-2BF40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2026-2BF40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-2BF40 — 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)
3RT2026-2BF40 — Connection & Mounting
ParameterValue
Main circuit connectionspring-loaded terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid1 ... 10 mm²
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2026-2BF40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-2BF40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-2BF40 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

It carries a 110 V AC coil and uses spring-type terminals for the main and auxiliary circuits — no screwdriver needed, which speeds up panel wiring and cuts down on loose connections out here in the grease. Rated for a coil pickup at 0.8 x rated voltage and a dropout at 1.1 x full-scale, it holds in across the -25 to +60 °C operating range — wide enough for most cabinet environments without forced cooling.

The 110 V AC coil draws its rated value at 110 V; the contactor handles 10 A at 24 V DC, 2 A at 48 V and 60 V DC, 1 A at 110 V DC, 0.9 A at 125 V DC, 0.3 A at 220 V DC, and 3 A at 400 V AC — so it's sized for moderate motor loads and control circuits, not high-current feeders. Mechanical life is rated at 10 million operations typical, with switching frequencies up to 1000 cycles per hour at AC-1 (resistive) and 750 per hour at AC-3 (motor). That's enough for frequent cycling on a conveyor or pump station, but if you're hammering it at AC-4 (plugging/reversing) you're limited to 250 per hour — plan the duty cycle accordingly.

The S0 footprint is 45 mm wide, 102 mm tall, 107 mm deep — fits standard panel spacing, but watch the 107 mm depth when the gland plate or door is tight. That's lean enough for dense rail packing, but don't crowd the arc chute side — arcing time runs 10 to 10 ms, and the magnetic blowout needs room to stretch the arc.

Spring-type terminals accept solid or stranded wire from 1 to 10 mm², and you can land two conductors of 0.5 to 2.5 mm² each in the same clamp — handy for daisy-chaining control power or looping through an auxiliary contact.

Frequently asked questions

What is the depth of the 3RT2026-2BF40?

The depth is 107 mm, which is the dimension from the DIN rail base to the front of the contactor.

What wire sizes does the 3RT2026-2BF40 accept?

The spring terminals accept solid or stranded wire from 1 to 10 mm², or two conductors of 0.5 to 2.5 mm² each.

MPN
3RT2026-2BF40