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Siemens 3RT2026-2FB40 — Contactors

Siemens SIRIUS 3RT2026-2FB40 Power Contactor, S0, 24 VDC Coi

MPN3RT2026-2FB40
Active

Siemens SIRIUS 3RT2026-2FB40 power contactor, size S0, 24 VDC coil, spring-type terminals, screw and snap-on 35 mm DIN rail mounting.

$68.58Ref. 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

3RT2026-2FB40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-2FB40 — 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
3RT2026-2FB40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2026-2FB40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-2FB40 — 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)
3RT2026-2FB40 — 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 DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2026-2FB40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-2FB40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-2FB40 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

The 24 VDC coil pulls a holding current of 10 A at rated voltage, so your 24 VDC supply needs to handle that inrush and hold. The coil dropout time is 15 to 18 ms at DC — useful to know if you're sequencing contactors in a safety circuit where timing matters. The arcing time is a tight 10 ms, which keeps contact wear predictable on resistive loads. That's a solid industrial range — no issues in an unheated enclosure or a warm cabinet, as long as you stay inside the curve. The spring-type terminals accept solid or stranded wire from 1 to 10 mm², and you can double up with 2x 0.5 to 2.5 mm². That's enough for most motor control circuits up to the S0 frame rating. No screw torque to worry about, and the spring cage holds tight under vibration.

The contactor is 45 mm wide, 102 mm tall, and 107 mm deep. That's a compact footprint — you can pack several S0 contactors side-by-side on the DIN rail without excessive spacing.

Frequently asked questions

What are the key mounting dimensions for the 3RT2026-2FB40?

It is 45 mm wide, 102 mm tall, and 107 mm deep. Clearance requirements are 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the sides. It mounts on 35 mm DIN rail per DIN EN 60715.

What wire sizes does the spring-type terminal accept?

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

What is the coil voltage and holding current?

The coil is rated at 24 VDC and draws 10 A at rated voltage. The dropout time at DC is 15 to 18 ms.

MPN
3RT2026-2FB40