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Siemens 3RT1075-6PF35 — Contactors

Siemens 3RT1075-6PF35 SIRIUS Power Contactor, Size S12, 96-1

MPN3RT1075-6PF35
Active

Siemens SIRIUS power contactor, Size S12, 3RT1075-6PF35, 96-127 V AC coil, screw-type terminals, 700 A AC-1, 225 mm depth.

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

Specifications

3RT1075-6PF35 — Identification
ParameterValue
Contactor frame sizeS12
3RT1075-6PF35 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V350 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
3RT1075-6PF35 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz96 ... 127 V
3RT1075-6PF35 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1075-6PF35 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 630 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)
3RT1075-6PF35 — 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
3RT1075-6PF35 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1075-6PF35 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1075-6PF35 — Mechanical
ParameterValue
Width180 mm
Height214 mm
Depth225 mm
3RT1075-6PF35 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

The coil voltage range is 96-127 V AC. Screw-type coil terminals simplify field wiring. The AC-1 rating (resistive load) governs continuous current capacity at 700 A — that's the number to size main power conductors and fusing. AC-3 (motor starting) and AC-4 (plugging/inching) ratings are lower; for motor duty, the AC-3 switching frequency of 500 operations per hour sets the thermal limit for repetitive starts. The arcing time of 10-15 ms is typical for this frame size and informs arc-flash coordination studies. Electrical life depends on the load; for AC-3 duty expect roughly 1-2 million cycles before contact inspection is due. The auxiliary switch is built in, rated at 10 A at 24 V, 2 A at 48-60 V, and 1 A at 110 V — enough to drive a PLC input or a small relay directly.

Mounting is screw fixing with a vertical surface orientation; the contactor can be rotated ±90° or tilted ±22.5° forward/back. That flexibility helps in tight enclosures where the busbars or cables dictate the orientation. The footprint is 214 mm high × 180 mm wide × 225 mm deep — allow 10 mm clearance above and below, 20 mm forward, and 10 mm at the sides for arc venting and airflow. Power terminals accept stranded cable from 70 mm² up to 240 mm² — that's the range for the main circuit. The auxiliary/coil terminals are screw-type, accepting 2× (0.5-1.5 mm²) solid or 2× (0.75-2.5 mm²) stranded, max 2× 4 mm². A single 11 mm diameter mounting hole is provided for the screw fix.

No end-of-life notice or last-time-buy date is available.

Frequently asked questions

What are the key dimensions of 3RT1075-6PF35?

The contactor measures 214 mm high × 180 mm wide × 225 mm deep. Mounting clearance: 10 mm above/below, 20 mm forward, 10 mm at sides.

What wire sizes does the 3RT1075-6PF35 accept?

Main power terminals accept stranded cable 70-240 mm². Auxiliary and coil terminals accept 2× (0.5-1.5 mm²) solid or 2× (0.75-2.5 mm²) stranded, max 2× 4 mm². Coil terminals are screw-type.

MPN
3RT1075-6PF35