Skip to main content
Log in
Siemens 3RT2026-1BF40 — Contactors

Siemens 3RT2026-1BF40 SIRIUS Contactor, 110 V Coil, S0 Size

MPN3RT2026-1BF40
Active

Siemens SIRIUS power contactor, 3RT2026-1BF40, Size S0, 110 V coil, screw-type terminals, 45 mm width, 107 mm depth.

$59.69Ref. price · indicative, final on quote
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

3RT2026-1BF40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-1BF40 — 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
3RT2026-1BF40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2026-1BF40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-1BF40 — 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)
3RT2026-1BF40 — 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
3RT2026-1BF40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-1BF40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-1BF40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

It is a current-production part. Rated for AC-3 duty at 750 operating cycles per hour, this contactor handles motor switching in standard industrial control panels. The 45 mm width and 107 mm depth fit the S0 footprint on 35 mm DIN rail (DIN EN 60715), with snap-on mounting for quick panel integration. Storage range extends to -55 to +80 °C.

These matter for heat dissipation and arc flash containment in dense panels.

Auxiliary switch terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded. Coil terminals are screw-type. DC dropout time is 15 to 18 ms; arcing time is 10 ms.

Maximum operating frequency varies by duty: AC-1 (resistive) at 1000 cycles/h, AC-2 and AC-3 (motor starting/running) at 750 cycles/h, AC-4 (plugging/inching) at 250 cycles/h. AC-3e rating also 750 cycles/h. Auxiliary contact ratings: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V.

Frequently asked questions

What is the depth of 3RT2026-1BF40?

The depth is 107 mm. Width is 45 mm, height is 85 mm.

What conductor sizes does the 3RT2026-1BF40 accept?

Main terminals accept solid or stranded 1 to 10 mm². Auxiliary terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²).

What is the coil voltage for 3RT2026-1BF40?

Rated coil voltage is 110 V. Coil terminals are screw-type.

MPN
3RT2026-1BF40