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Siemens 3RT1266-6AP36 — Contactors

Siemens 3RT1266-6AP36 SIRIUS Vacuum Contactor, S10 Size

MPN3RT1266-6AP36
Active

Siemens SIRIUS 3RT1266-6AP36 vacuum contactor, S10 size, 210 x 145 x 206 mm, 220-240 V AC coil, screw-type terminals, auxiliary switch included.

Siemens 3RT1266-6AP36 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1266-6AP36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1266-6AP36 — 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
3RT1266-6AP36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz220 ... 240 V
3RT1266-6AP36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1266-6AP36 — 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)
3RT1266-6AP36 — 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
3RT1266-6AP36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1266-6AP36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1266-6AP36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1266-6AP36 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

Panel fit and physical constraints

The 3RT1266-6AP36: The S10-size contactor measures 210 mm tall by 145 mm wide by 206 mm deep, with a screw-fixing mount that accepts an 11 mm hole.

Environmental limits and operating conditions

The contactor can be mounted on a vertical surface with ±22.5° rotation, or standing on a horizontal surface. Coil pick-up and drop-out times are 40 to 80 ms for both AC and DC control.

MPN
3RT1266-6AP36