Skip to main content
Siemens 3RT1066-6AP36-3PA0 — Contactors

Siemens 3RT1066-6AP36-3PA0 SIRIUS Power Contactor, Size S10,

MPN3RT1066-6AP36-3PA0
Active

Siemens SIRIUS power contactor, size S10, 220-240 VAC coil, screw fixing, 70-240 mm² main pole 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

3RT1066-6AP36-3PA0 — Identification
ParameterValue
Contactor frame sizeS10
3RT1066-6AP36-3PA0 — 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
3RT1066-6AP36-3PA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz220 ... 240 V
3RT1066-6AP36-3PA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1066-6AP36-3PA0 — 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)
3RT1066-6AP36-3PA0 — 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
3RT1066-6AP36-3PA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1066-6AP36-3PA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1066-6AP36-3PA0 — Mechanical
ParameterValue
Width145 mm
Height210 mm
Depth202 mm
3RT1066-6AP36-3PA0 — Specifications
ParameterValue
At AC40 ... 80 ms

Product details

Its main-pole cable range accepts 70 to 240 mm² stranded conductors, so it handles the high-current feed from a distribution bus or large motor branch. The magnet coil is rated 220-240 VAC, with screw-type terminals for the coil connection. Mounting is by screw fixing, not DIN rail — plan for four M8 bolts through 11 mm holes on a vertical surface, with ±90° rotation and ±22.5° tilt allowed.

The contactor's maximum operating frequency varies sharply by duty class: 750 cycles per hour in AC-1 (resistive), 500/h in AC-3 (squirrel-cage motor start/run), and 130/h in AC-4 (plugging/inching). For AC-3e (enhanced motor switching) the limit is also 500/h. AC-2 (slip-ring motor) drops to 250/h. These are the thermal limits of the contactor's arc chamber and bimetallic strip — exceeding them in a given duty class shortens contact life. That means the contactor can handle fast cycling in a conveyor or pump start sequence, but not continuous inching at high rates.

Auxiliary contact ratings and wiring

The auxiliary contacts are 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 thermal current limits for the auxiliary circuit — use them for PLC inputs, status lamps, or interlocking relays. The auxiliary terminals accept solid or stranded conductors: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm². The coil terminals are screw-type, so you'll need a screwdriver for both coil and auxiliary wiring.

Mounting dimensions and clearances

The contactor measures 210 mm high, 145 mm wide, and 202 mm deep. Mounting is by screw fixing through one 11 mm hole per pole — four bolts total. These are the arc-flash and cooling clearances; respect them to avoid tracking or thermal derating.

Frequently asked questions

Where can I buy 3RT1066-6AP36-3PA0 and how do I get a price?

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

What is 3RT1066-6AP36-3PA0's listed depth?

The depth is 202 mm.

What conductor cross-sections does the auxiliary switch accept?

The auxiliary terminals accept solid or stranded conductors: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm².

Will 3RT1066-6AP36-3PA0 drop into a panel that was specified around 3RT1266-6AP36-0KA1 without rewiring?

Both are size S10 SIRIUS contactors with the same mounting footprint and screw fixing pattern, so the mechanical fit is identical. The coil voltage and auxiliary wiring are the same — no rewiring needed for the panel layout. The main difference is the 3RT1266 variant includes an integrated electronic overload relay; the 3RT1066 does not, so you must add a separate overload relay in the motor branch.

MPN
3RT1066-6AP36-3PA0