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Siemens 3RT1075-6AP36 SIRIUS Power Contactor, S12, 220-240V

MPN3RT1075-6AP36

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Siemens SIRIUS power contactor, 3RT1075-6AP36, S12 frame, 220-240V AC coil, screw fixing, 160x214x225 mm.

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Siemens 3RT1075-6AP36 datasheet (PDF)

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

Specifications

3RT1075-6AP36 — Identification
Parameter	Value
Contactor frame size	S12

3RT1075-6AP36 — Ratings & Performance
Parameter	Value
Rated operational current, AC-12, max.	10 A
Rated operational current, AC-4 @ 400 V	350 A
Rated value @ 400 V	3 A
Rated value @ 500 V	2 A
Rated value @ 690 V	1 A
Rated value @ 230 V	6 A
Rated value @ 24 V	10 A
Rated value @ 60 V	2 A
Rated value @ 110 V	1 A
Rated value @ 220 V	0.3 A

3RT1075-6AP36 — Control & Coil
Parameter	Value
Control supply voltage type	AC/DC
Rated value @ 50 Hz	0.9
Rated value @ 50 Hz	220 ... 240 V

3RT1075-6AP36 — Contacts & Poles
Parameter	Value
Main poles	3
Main NO contacts	3
Auxiliary contact reliability	1 faulty switching per 100 million (17 V, 1 mA)

3RT1075-6AP36 — Protection & Coordination
Parameter	Value
Short-circuit coordination type 1, fuse	gG: 630 A (690 V, 100 kA)
Short-circuit coordination type 2, fuse	gG: 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, fuse	gG: 10 A (500 V, 1 kA)

3RT1075-6AP36 — Connection & Mounting
Parameter	Value
Main circuit connection	Connection bar
Aux. / control circuit connection	screw-type terminals
Conductor cross-section, solid	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded	2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule	2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting method	screw fixing
Side-by-side mounting	Yes

3RT1075-6AP36 — Durability
Parameter	Value
Durability (operating cycles, typ.)	10 000 000
Durability with aux. switch block (cycles, typ.)	10 000 000

3RT1075-6AP36 — Environmental
Parameter	Value
Operating temperature range	-25 ... +60 °C
Storage temperature range	-55 ... +80 °C
Installation altitude, max.	2 000 m

3RT1075-6AP36 — Mechanical
Parameter	Value
Width	160 mm
Height	214 mm
Depth	225 mm

3RT1075-6AP36 — Specifications
Parameter	Value
At AC	60 ... 100 ms

Product details

What this contactor is

This is a Siemens SIRIUS S12 power contactor, catalog number 3RT1075-6AP36. It's a screw-fixing contactor that lives in bigger motor control centers — the kind you build when the load is serious. Coil takes 220-240 V AC, and it's rated for switching frequencies that match real motor duty: AC-3 at 500 operations an hour for regular starts, and AC-4 at 130 an hour for the plugging and reversing that eats contacts.

It measures 160 mm wide, 214 mm high, 225 mm deep; mount vertical with up to 90° rotation and 22.5° tilt. Main power terminals accept stranded 70-240 mm²; control screw-type terminals accept solid 2x (0.5-1.5 mm²) or 2x (0.75-2.5 mm²), up to 4 mm² single.

Frequently asked questions

What wire sizes does this contactor accept?

Main power terminals accept stranded wire from 70 to 240 mm². The control circuit terminals accept solid wire: 2x (0.5 to 1.5) mm², 2x (0.75 to 2.5) mm², and up to 4 mm² for a single conductor.