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Siemens 3RT1265-6NF36 — Contactors

Siemens 3RT1265-6NF36 SIRIUS Vacuum Contactor, S10, 96-127V

MPN3RT1265-6NF36
Active

Siemens SIRIUS vacuum contactor, size S10, order code 3RT1265-6NF36, screw-type coil terminals, 96-127 V AC/DC coil, current lifecycle stage.

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

Specifications

3RT1265-6NF36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1265-6NF36 — 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
3RT1265-6NF36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz96 ... 127 V
3RT1265-6NF36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1265-6NF36 — 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)
3RT1265-6NF36 — 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
3RT1265-6NF36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1265-6NF36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1265-6NF36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1265-6NF36 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

The 3RT1265-6NF36: Rated operational current at AC-3 (motor duty) is the headline figure for this frame — the S10 size typically handles up to several hundred amps in AC-3 service, though the exact value isn't listed here. What is listed: maximum switching rate at AC-3 is 750 operations per hour, so it's built for fast cycling on conveyor or pump start-stop duty. The vacuum interrupter keeps arcing time to 10 to 15 ms, which reduces contact degradation and extends service intervals compared to an air-break contactor at the same switching frequency. Coil pickup and dropout timing is symmetrical: 80 to 100 ms at both AC and DC. That matters when coordinating with a safety relay or PLC output — the contactor won't pull in faster on DC than AC, so a single timing window covers both supply types. The coil holds at 96 V and drops out at 0.8 × rated value (about 77 V), giving a reasonable margin against brownout conditions. Power circuit termination: stranded cable from 70 to 240 mm². That's a heavy lug range — suitable for main feeder or large motor circuits, not control wiring. The auxiliary switch is included, so you get at least one N.O./N.C. set for status feedback or interlocking.

Mounting is screw fixing, not DIN rail — the S10 frame is bolted to a backplate or mounting channel. Dimensions: 210 mm high, 145 mm wide, 206 mm deep.

Lifecycle stage is current — no end-of-life notice or last-time-buy trigger on this order code. No official successor has been published, which is consistent with an active catalog number.

Frequently asked questions

What coil voltage does 3RT1265-6NF36 use?

Rated coil voltage is 96 to 127 V AC/DC, with screw-type terminals on the magnet coil.

Where can I buy 3RT1265-6NF36?

This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.

What is the closest functional second-source for 3RT1265-6NF36?

The peer 3RT1264-6AP36-0KA1 is a similar SIRIUS vacuum contactor but in a smaller frame size (S6 vs S10). It will not drop into a panel specified around the S10 without rewiring — the power lug range and mounting footprint differ. Verify the frame size and cable cross-section before substituting.

MPN
3RT1265-6NF36