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Siemens 3RT1066-6AF36-0UA0 — Contactors

Siemens 3RT1066-6AF36-0UA0 SIRIUS Power Contactor, Size S10,

MPN3RT1066-6AF36-0UA0
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Siemens SIRIUS power contactor, Size S10, 3RT1066-6AF36-0UA0, 110-127 V AC coil, screw-type terminals, 70-240 mm² stranded cable, 202 mm depth, 145 mm width, 210 mm height.

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

3RT1066-6AF36-0UA0 — Identification
ParameterValue
Contactor frame sizeS10
3RT1066-6AF36-0UA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V280 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
3RT1066-6AF36-0UA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz110 ... 127 V
3RT1066-6AF36-0UA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1066-6AF36-0UA0 — 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)
3RT1066-6AF36-0UA0 — 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
3RT1066-6AF36-0UA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1066-6AF36-0UA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1066-6AF36-0UA0 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth202 mm
3RT1066-6AF36-0UA0 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

SIRIUS S10 power contactor, 110-127 V coil — what you're looking at

The 110-127 V AC coil pulls in down to 0.8 × rated and drops out cleanly; closure time is 40-80 ms. The screw-terminal variant accepts stranded cable from 70 mm² to 240 mm².

The screw fixing method uses an 11 mm hole — one hole, so it's a single-bolt mount, not a four-corner pattern.

Switching duty and mechanical life

Rated for AC-3 motor switching at 500 operations per hour maximum, AC-1 resistive at 750 ops/h, AC-4 (plugging/reversing) at 130 ops/h. The auxiliary switch is included — screw-type terminals on the coil side as well. Arcing time runs 10-15 ms; power factor at 50/60 Hz is 0.9. The auxiliary contact ratings: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V — enough for a PLC input or a pilot light, but watch the voltage drop on long runs.

Frequently asked questions

What is 3RT1066-6AF36-0UA0's listed depth?

The depth is 202 mm, with a width of 145 mm and height of 210 mm.

What cable sizes does the main circuit accept?

The screw terminals accept stranded cable from 70 mm² up to 240 mm². The auxiliary/coil terminals accept solid or stranded 2x (0.5-1.5 mm²), 2x (0.75-2.5 mm²), or max 2x (0.75-4 mm²).

MPN
3RT1066-6AF36-0UA0