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Siemens 3RT2026-1BB40 SIRIUS Power Contactor, 24 V Coil, 10M

MPN3RT2026-1BB40

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Siemens SIRIUS power contactor, size S0, 24 V coil, screw terminals, 45 x 85 x 107 mm, 10 million mechanical operations, current production.

$59.69Ref. price · indicative, final on quote

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Siemens 3RT2026-1BB40 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2026-1BB40 — Identification
Parameter	Value
Contactor frame size	S0

3RT2026-1BB40 — Ratings & Performance
Parameter	Value
Rated operational current, AC-12, max.	10 A
Rated operational current, AC-4 @ 400 V	15.5 A
Rated value @ 400 V	3 A
Rated value @ 500 V	2 A
Rated value @ 690 V	1 A
Rated value @ 230 V	3 hp
Rated value @ 24 V	10 A
Rated value @ 60 V	2 A
Rated value @ 110 V	1 A
Rated value @ 220 V	0.3 A

3RT2026-1BB40 — Control & Coil
Parameter	Value
Control supply voltage type	DC

3RT2026-1BB40 — Contacts & Poles
Parameter	Value
Main poles	3
Main NO contacts	3
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RT2026-1BB40 — Protection & Coordination
Parameter	Value
Short-circuit coordination type 1, fuse	gG: 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, fuse	gG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA)
Aux. switch short-circuit protection, fuse	gG: 10 A (500 V, 1 kA)

3RT2026-1BB40 — Connection & Mounting
Parameter	Value
Main circuit connection	screw-type terminals
Aux. / control circuit connection	screw-type terminals
Conductor cross-section, solid	1 ... 10 mm²
Conductor cross-section, solid or stranded	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting method	screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mounting	Yes

3RT2026-1BB40 — Durability
Parameter	Value
Durability (operating cycles, typ.)	10 000 000
Durability with aux. switch block (cycles, typ.)	10 000 000

3RT2026-1BB40 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RT2026-1BB40 — Mechanical
Parameter	Value
Width	45 mm
Height	85 mm
Depth	107 mm

3RT2026-1BB40 — Specifications
Parameter	Value
At AC	5 000 1/h

Product details

At AC, switching frequency is 5 000 1/h.

The coil holds at 24 V rated value; verify coil suppression polarity when using free-wheel diodes for inductive loads. The mechanical life figure of 10 million operations translates to roughly 5.7 years of continuous cycling at 1 Hz – a solid baseline for maintenance planning. For fine-stranded or twin wires, use 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) per terminal – relevant when terminating control transformers or auxiliary cables.