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Siemens 3RT1066-6PP35 — Contactors

Siemens 3RT1066-6PP35 SIRIUS Power Contactor, S10, 240 mm²

MPN3RT1066-6PP35
Active

Siemens SIRIUS 3RT1066-6PP35 power contactor, size S10, screw-type magnet coil terminals, 240 mm² stranded cable, 3-pole, 210 x 165 x 202 mm.

Siemens 3RT1066-6PP35 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1066-6PP35 — Identification
ParameterValue
Contactor frame sizeS10
3RT1066-6PP35 — 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
3RT1066-6PP35 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz200 ... 277 V
3RT1066-6PP35 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1066-6PP35 — 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)
3RT1066-6PP35 — 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
3RT1066-6PP35 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1066-6PP35 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1066-6PP35 — Mechanical
ParameterValue
Width165 mm
Height210 mm
Depth202 mm
3RT1066-6PP35 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

Panel fit: 210 x 165 x 202 mm

The 3RT1066-6PP35: The contactor measures 210 mm high, 165 mm wide, and 202 mm deep — a substantial footprint that requires a backplate or DIN-rail adapter bracket (not included) with screw fixing through 11 mm holes. Mounting position is flexible: vertical surface with ±90° rotation, or ±22.5° tilt forward/back.

Operating envelope and coil data

Pickup/dropout delay is 80...100 ms for both AC and DC, arcing time 10...15 ms. The contactor includes an auxiliary switch (standard fit) and is rated for 10 million typical mechanical operations.

Switching duty and lifecycles

Maximum switching rates: 750 ops/h at AC-1 (resistive), 250 ops/h at AC-2, 500 ops/h at AC-3 and AC-3e (standard motor duty), and 130 ops/h at AC-4 (plugging/reversing). The AC-3/AC-3e rate of 500 ops/h is typical for conveyor and pump cycling.

Frequently asked questions

What is the main power cable size for the 3RT1066-6PP35?

The main poles accept stranded cable from 70 mm² up to 240 mm² — the largest in the SIRIUS contactor range, sized for high-current motor feeders or resistive loads.

Does the 3RT1066-6PP35 include an auxiliary contact block?

Yes, the contactor comes with an auxiliary switch integrated as standard.

Can the 3RT1066-6PP35 be mounted on a DIN rail?

No — the fastening method is screw fixing through 11 mm holes, not snap-on DIN rail. It requires a backplate or adapter bracket for panel installation.

MPN
3RT1066-6PP35