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Siemens 3RT1264-6AD36 — Contactors

Siemens 3RT1264-6AD36 SIRIUS Vacuum Contactor, S10, 42-48V C

MPN3RT1264-6AD36
Active

Siemens SIRIUS vacuum contactor, size S10, order code 3RT1264-6AD36, 42-48 V coil, screw-type terminals, current production.

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

Specifications

3RT1264-6AD36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1264-6AD36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V195 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
3RT1264-6AD36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz42 ... 48 V
3RT1264-6AD36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1264-6AD36 — 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)
3RT1264-6AD36 — 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
3RT1264-6AD36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1264-6AD36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1264-6AD36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1264-6AD36 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

The contactor measures 210 mm high, 145 mm wide, and 206 mm deep, and mounts via screw fixing with two 11 mm diameter holes.

The coil is rated 42-48 V — a common control voltage in many industrial installations, using screw-type terminals for secure wiring. The contactor includes an auxiliary switch, with contact ratings of 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — enough for signaling back to a PLC or indicating contactor status. Switching frequency varies by duty class: up to 800 operations per hour in AC-1 (resistive), 750 in AC-3 (standard motor starting), and 250 in AC-4 (plugging/inching) — the AC-3 figure is the one that governs most conveyor and pump applications. The main power circuit accepts stranded conductors from 70 to 240 mm², while auxiliary circuits accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, up to 4 mm² maximum.

Because it is a vacuum contactor rather than an air-break design, it offers longer contact life in high-cycling applications and is preferred in environments where contact erosion from arcing must be minimized.

Frequently asked questions

What are the key dimensions for panel layout?

The contactor is 210 mm high, 145 mm wide, and 206 mm deep. It requires 10 mm clearance above and below, 20 mm in front, and 10 mm on each side for ventilation.

What wire sizes does the main circuit accept?

The main power terminals accept stranded conductors from 70 mm² up to 240 mm². Auxiliary terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, up to 4 mm² maximum.

What is the switching frequency for motor starting (AC-3)?

In AC-3 duty (standard motor starting), the contactor is rated for up to 750 operations per hour.

MPN
3RT1264-6AD36