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Siemens 3RT1265-6AV36 — Contactors

Siemens SIRIUS 3RT1265-6AV36 Vacuum Contactor, Size S10, 380

MPN3RT1265-6AV36
Active

Siemens SIRIUS, vacuum contactor, size S10, order code 3RT1265-6AV36, rated coil 380-420 V AC, auxiliary switch included, screw fixing.

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

Specifications

3RT1265-6AV36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1265-6AV36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V230 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
3RT1265-6AV36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz380 ... 420 V
3RT1265-6AV36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1265-6AV36 — 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)
3RT1265-6AV36 — 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
3RT1265-6AV36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1265-6AV36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1265-6AV36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1265-6AV36 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

It lands in a control panel via screw fixing, with a 210 mm height, 145 mm width, and 206 mm depth, and the mounting position allows ±22.5° rotation on a vertical surface or standing on a horizontal one.

The coil is rated 380…420 V AC at 50/60 Hz, with a pick-up of 0.8 x rated value and a drop-out of 0.9 x rated value — so on a nominal 400 V line the contactor pulls in reliably down to about 320 V and drops out at about 360 V. The coil connection uses screw-type terminals. The auxiliary switch (included) carries 10 A at 24 V DC, 2 A at 48 V or 60 V DC, and 1 A at 110 V DC — enough for a PLC input or a relay interlock, but watch the DC derating above 24 V.

Switching rates and thermal cycling

Maximum switching rates: 750 operations/hour in AC-1 (resistive), AC-3 (motor start/run), and AC-3e (enhanced motor) duty; 250 ops/hour in AC-2 (slip-ring motor) and AC-4 (plugging/inching).

Termination and clearance

Main power terminals accept stranded wire from 70 mm² up to 240 mm² — sized for the full load current of this frame. Auxiliary terminals accept solid or stranded 0.5…1.5 mm² (two conductors) or up to 4 mm² (single). Minimum clearance to grounded parts: 10 mm upwards, 20 mm forwards, 10 mm sideways, 10 mm downwards — keep that in the panel layout.

Frequently asked questions

What is 3RT1265-6AV36's listed depth?

The depth is 206 mm.

What wire sizes does the auxiliary terminal accept?

Solid: 2x (0.5…1.5 mm²), 2x (0.75…2.5 mm²), max. 2x (0.75…4 mm²). Stranded: same ranges.

What compliance documentation does Siemens provide for 3RT1265-6AV36?

As a Siemens SIRIUS product, it typically carries CE, UL, CSA, and RoHS/REACH declarations — confirm the specific certificate numbers with the order documentation.

MPN
3RT1265-6AV36