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Siemens 3RT1266-6AB36 — Contactors

Siemens 3RT1266-6AB36 SIRIUS Vacuum Contactor, Size S10, 24

MPN3RT1266-6AB36
Active

Siemens SIRIUS vacuum contactor, Size S10, order code 3RT1266-6AB36, 24 VDC coil, screw fixing, 70–240 mm² stranded main circuit, 206 mm depth, 145 mm width, 210 mm height.

Siemens 3RT1266-6AB36 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1266-6AB36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1266-6AB36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V280 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1266-6AB36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz23 ... 26 V
3RT1266-6AB36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1266-6AB36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 500 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 500 A (690 V, 100 kA), aM: 400 A (690 V, 50 kA), BS88: 450 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1266-6AB36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1266-6AB36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1266-6AB36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1266-6AB36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1266-6AB36 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

The 3RT1266-6AB36: The main circuit accepts stranded conductors from 70 mm² up to 240 mm² — that is a heavy cable range, sized for high-current motor feeders. The auxiliary circuit uses screw-type terminals accepting 2x (0.5–1.5 mm²) solid or 2x (0.75–2.5 mm²) stranded, with a maximum of 2x (0.75–4 mm²). At 24 V rated value, the auxiliary contacts are rated 10 A; at 48 V and 60 V they drop to 2 A.

The contactor is rated for 750 operations per hour in AC-1 and AC-3 duty, and 250 operations per hour in AC-2 and AC-4 duty. At 50 Hz and 60 Hz the power factor is 0.9. These ratings matter for applications with frequent starts or reversing — AC-4 duty (plugging, inching) is the most demanding, and the 250 ops/h limit reflects that.

Frequently asked questions

How do I get current pricing and availability for 3RT1266-6AB36?

Submit an RFQ through this listing; availability and current pricing are confirmed at quote time through independent distribution.

What is 3RT1266-6AB36's listed depth?

The depth is 206 mm.

What conductor sizes does the main circuit accept?

The main circuit accepts stranded conductors from 70 mm² up to 240 mm².

What compliance documentation does this brand provide for 3RT1266-6AB36?

Standard RoHS and REACH declarations are provided with the shipment; no special compliance documentation is required beyond standard industrial control gear.

MPN
3RT1266-6AB36