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Siemens 3RT1075-6NF36 — Contactors

Siemens 3RT1075-6NF36 SIRIUS Power Contactor, 96-127VAC Coil

MPN3RT1075-6NF36
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Siemens SIRIUS power contactor, size S12, 3RT1075-6NF36, 96-127 V AC coil, screw-type terminals, screw fixing.

Siemens 3RT1075-6NF36 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1075-6NF36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1075-6NF36 — 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
3RT1075-6NF36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.4
Rated value @ 50 Hz96 ... 127 V
3RT1075-6NF36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1075-6NF36 — 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)
3RT1075-6NF36 — 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
3RT1075-6NF36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1075-6NF36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1075-6NF36 — Mechanical
ParameterValue
Width160 mm
Height214 mm
Depth225 mm
3RT1075-6NF36 — Specifications
ParameterValue
At AC80 ... 100 ms

Product details

SIRIUS S12 power contactor — 3RT1075-6NF36

Mounting is by screw fixing, with the contactor positionable on a vertical surface rotatable ±90° or tiltable ±22.5° front-to-back, giving panel builders flexibility in tight enclosures.

The contactor measures 214 mm high, 160 mm wide, and 225 mm deep. These clearances must be maintained for arc-flash containment and cooling. Auxiliary wiring accepts solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) — typical for control-circuit terminations.

Switching performance and duty ratings

Maximum switching frequency varies by duty: 700 operations per hour in AC-1 (resistive), 500/h in AC-3 (motor start/run), 200/h in AC-2, and 130/h in AC-4 (plugging/inching). AC-3e matches AC-3 at 500/h. Arcing time is 10-15 ms. Mechanical life is typically 10,000,000 operations. Auxiliary contact ratings: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — these are the switching capacities for the built-in auxiliary contacts.

Frequently asked questions

What are the key dimensions for panel layout?

Height 214 mm, width 160 mm, depth 225 mm. Minimum clearances: 10 mm up/down/sides, 20 mm forward.

What conductor sizes does the main circuit accept?

Stranded conductors from 70 to 240 mm² for the main power circuit. Auxiliary terminals accept 0.5 to 4 mm² solid or stranded.

What coil voltage does this contactor use?

96-127 V AC, with screw-type coil terminals.

MPN
3RT1075-6NF36