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Siemens 3RT1265-6NP36 — Contactors

Siemens 3RT1265-6NP36 SIRIUS Vacuum Contactor, S10, 200-277V

MPN3RT1265-6NP36
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Siemens SIRIUS vacuum contactor, size S10, order code 3RT1265-6NP36, coil rated value 200-277 V, screw-type terminals, screw fixing, 206 mm depth.

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

Specifications

3RT1265-6NP36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1265-6NP36 — 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
3RT1265-6NP36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz200 ... 277 V
3RT1265-6NP36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1265-6NP36 — 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)
3RT1265-6NP36 — 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
3RT1265-6NP36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1265-6NP36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1265-6NP36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth206 mm
3RT1265-6NP36 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

The coil accepts 200-277 V AC or DC, with a pickup dropout ratio of 0.8 per the datasheet — meaning the coil holds in down to 160 V on a 200 V nominal supply, a useful margin for brownout ride-through on a critical motor circuit.

Mounts via screw fixing through an 11 mm hole; the S10 frame measures 210 mm high by 145 mm wide by 206 mm deep. Power wiring accepts stranded cable from 70 mm² up to 240 mm², sized for the full rated current of the S10 frame.

Duty Ratings and Switching Frequency

Switching frequency varies by duty class: 750 operations per hour in AC-1 (resistive) and AC-3 (squirrel-cage motor starting), 250 ops/h in AC-2 (slip-ring motor) and AC-4 (plugging/inching). The AC-3e rating also permits 750 ops/h. For a conveyor drive cycling every 4.8 seconds, the 750 ops/h ceiling is the limit — exceeding it would require derating or a larger frame. Arcing time is specified at 10-15 ms, and the contactor picks up or drops out within 80-100 ms on both AC and DC supplies.

Environmental Limits and Auxiliary Ratings

The auxiliary switch is rated 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — these are the make/break capacities for the control circuit, not the main poles.

Frequently asked questions

Where can I buy 3RT1265-6NP36 and what is the lead time?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is 3RT1265-6NP36's listed depth?

The depth is 206 mm, with a height of 210 mm and width of 145 mm for the S10 frame.

What compliance documentation does Siemens provide for 3RT1265-6NP36?

As a SIRIUS-branded industrial control component, standard documentation includes the manufacturer's declaration of conformity to relevant EU directives and the product datasheet. Specific certs (UL, CSA, IEC) should be verified against the nameplate on the unit.

MPN
3RT1265-6NP36