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Siemens 3RT1065-6NB36 — Contactors

Siemens 3RT1065-6NB36 SIRIUS Power Contactor, Size S10, 210x

MPN3RT1065-6NB36
Active

Siemens SIRIUS, power contactor, 3RT1065-6NB36, Size S10, screw fixing, 210 x 145 x 202 mm, auxiliary switch included.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1065-6NB36 — Identification
ParameterValue
Contactor frame sizeS10
3RT1065-6NB36 — 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
3RT1065-6NB36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz21 ... 27.3 V
3RT1065-6NB36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1065-6NB36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 500 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 400 A (690 V, 100 kA), aM: 315 A (690 V, 50 kA), BS88: 400 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1065-6NB36 — 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
3RT1065-6NB36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1065-6NB36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1065-6NB36 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth202 mm
3RT1065-6NB36 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

SIRIUS Size S10 power contactor — panel fit and switching duty

Dimensions are 210 mm high, 145 mm wide, 202 mm deep — fits standard enclosure backplates without surprises. Switching rates per hour: 800 at AC-1 (resistive), 250 at AC-2 (slip-ring motors), 500 at AC-3 (squirrel-cage motors), 130 at AC-4 (plugging/inching), and 500 at AC-3e. Operate time is 80 to 100 ms on both AC and DC coils, with arcing time 10–15 ms. That means the contactor closes fast enough for standard motor starting but not so fast it causes nuisance trips from inrush.

Wiring and auxiliary contacts

Power circuit wiring accepts stranded conductors from 70 mm² up to 240 mm² — that's a heavy cable range, sized for the full rated current of the S10 frame. The magnet coil uses screw-type terminals; solid wire sizes accepted are 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²).

Frequently asked questions

What is the closest functional second-source to 3RT1065-6NB36?

The peer 3RT1266-6AP36-0KA1 is a Size S10 contactor in the same SIRIUS family, but it carries a different coil voltage and may have different auxiliary contact configuration. Verify the coil rating and aux contact count against your BOM before substituting — the mechanical footprint and mounting are shared, but the electrical specs differ.

Will 3RT1065-6NB36 drop into a panel specified around 3RT1266-6AP36-0KA1 without rewiring?

The mechanical footprint (Size S10, screw fixing, same height/width/depth) is shared, so it will physically fit the same backplate holes and busbar positions. However, the coil voltage and auxiliary contact arrangement may differ — check the coil rating on the nameplate before energizing.

MPN
3RT1065-6NB36