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Siemens 3RT2026-2BM40 — Contactors

Siemens 3RT2026-2BM40 SIRIUS Power Contactor, S0, 24 VDC, Sp

MPN3RT2026-2BM40
Active

Siemens SIRIUS power contactor, 3RT2026-2BM40, size S0, 24 VDC coil, spring-type terminals, 45 mm wide, rated for AC-3 switching at 750 cycles/hour.

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

3RT2026-2BM40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2026-2BM40 — 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
3RT2026-2BM40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2026-2BM40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2026-2BM40 — 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)
3RT2026-2BM40 — 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
3RT2026-2BM40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2026-2BM40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2026-2BM40 — Mechanical
ParameterValue
Width45 mm
Height102 mm
Depth107 mm

Product details

The AC-3 switching frequency of 750 cycles/hour means this contactor can handle repeated motor start/stop cycles typical of conveyor or pump duty without overheating the coil or contacts. For DC switching, the contactor is rated at 10 A at 24 V, 2 A at 48 V, and 0.3 A at 220 V — these are resistive-load values; inductive DC loads will require derating. The 10 mm clearance to adjacent devices (upwards, forwards, downwards) is the minimum for heat dissipation and arc containment.

Integration notes

Panel footprint: 45 mm wide, 102 mm tall, 107 mm deep. Side clearance drops to 6 mm. The auxiliary switch block is present (yes), so add-on contact blocks are not required for basic status feedback. Spring terminals accept 2x (0.5... 2.5 mm²) for control wiring. Torque not specified — typical for spring clamps, no tool needed beyond a screwdriver for release.

Frequently asked questions

What are the key ratings for this contactor?

AC-3 switching at 750 cycles/hour, DC switching at 10 A / 24 V, and a 24 VDC coil. The S0 frame size fits standard 45 mm DIN-rail spacing.

What type of terminals does it have?

Spring-type terminals (cage clamp) on the main contacts, accepting 1 to 10 mm² solid or stranded wire. Control wiring uses 2x (0.5 to 2.5 mm²).

What clearance is needed around this contactor?

Minimum 10 mm upwards, forwards, and downwards; 6 mm to the side. These are the IEC-recommended distances for heat dissipation and arc flash containment.

MPN
3RT2026-2BM40