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Siemens 3RT2526-1BM40 — Contactors

Siemens 3RT2526-1BM40 SIRIUS Contactor, Size S0, 220 V Coil,

MPN3RT2526-1BM40
Active

Siemens SIRIUS 3RT2526-1BM40, Size S0 contactor, 220 V AC 50/60 Hz coil, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.

$72.39Ref. 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

3RT2526-1BM40 — Identification
ParameterValue
Contactor frame sizeS0
3RT2526-1BM40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2526-1BM40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2526-1BM40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts2
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2526-1BM40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 63 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 35 A (690 V, 50 kA)
Aux. switch short-circuit protection, fusefuse gG: 10 A
3RT2526-1BM40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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 50022
Side-by-side mountingYes
3RT2526-1BM40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2526-1BM40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2526-1BM40 — Mechanical
ParameterValue
Width61 mm
Height85 mm
Depth107 mm
3RT2526-1BM40 — Specifications
ParameterValue
At AC5 000 1/h

Product details

Rated switching capacity varies by load voltage: 10 A at 24 V DC, 10 A at 230 V AC, 3 A at 400 V AC, and 0.3 A at 220 V DC — the DC curve drops fast above 60 V, so watch your inductive DC loads. Mechanical life is 10,000,000 operations typical; electrical switching frequency maxes at 5,000 cycles per hour on AC duty, 1,000 per hour at AC-1 maximum.

Panel Fit and Clearances

Dimensions are 85 mm high, 61 mm wide, 107 mm deep — the 107 mm depth is the dimension to watch when spacing against a gland plate or back panel. Minimum clearance to adjacent components: 0 mm upwards, forwards, and backwards; 6 mm at the sides. That zero-clearance on three faces means you can pack contactors tight in a row, but the 6 mm side gap is mandatory for arc flash containment. Handy for angled subpanels or tight enclosures.

Screw-type terminals accept solid or stranded wire: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). That covers standard control wiring up to 14 AWG; no ferrule requirement for stranded, but ferrules help in repeated disconnect scenarios. An auxiliary switch is included (yes), so you get a built-in feedback contact for PLC input or status lamp without bolting on a separate block.

Environmental Range

Arcing time is 10 to 10 ms — consistent, short arc extinction for a contactor this size, which helps with contact life in inductive switching.

Frequently asked questions

What is the depth of the 3RT2526-1BM40?

The depth is 107 mm. That is the dimension to check against your enclosure depth or gland plate clearance.

What wire sizes does the 3RT2526-1BM40 accept?

Screw terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire.

Will the 3RT2526-1BM40 drop into a panel specified for the 3RT2526-1BG40 without rewiring?

Both are Size S0 contactors with the same footprint and DIN rail mount, so mechanical fit is identical. The difference is the coil voltage — the 1BM40 has a 220 V AC coil; the 1BG40 uses a different coil voltage. Verify coil supply before swapping.

MPN
3RT2526-1BM40