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Siemens 3RT1076-6AT36 — Contactors

Siemens 3RT1076-6AT36 SIRIUS Power Contactor, S12 Frame, 575

MPN3RT1076-6AT36
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Siemens SIRIUS power contactor, S12 frame, 3RT1076-6AT36, 575-600 VAC coil, screw-type terminals, depth 225 mm, width 160 mm, height 214 mm.

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

Specifications

3RT1076-6AT36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1076-6AT36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V430 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
3RT1076-6AT36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz575 ... 600 V
3RT1076-6AT36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1076-6AT36 — 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: 500 A (690 V, 50 kA), BS88: 500 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1076-6AT36 — 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
3RT1076-6AT36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1076-6AT36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1076-6AT36 — Mechanical
ParameterValue
Width160 mm
Height214 mm
Depth225 mm
3RT1076-6AT36 — Specifications
ParameterValue
At AC60 ... 100 ms

Product details

It uses screw fixing to a vertical mounting surface and can be rotated ±90° or tilted ±22.5° forward/backward, which gives the panel builder flexibility when laying out a crowded enclosure. The coil is rated for 575–600 VAC.

The S12 frame handles stranded power cables from 70 up to 240 mm². Switching frequency varies by duty: AC-1 (resistive) allows up to 500 operations per hour, AC-3 (squirrel-cage motor start/run) allows 420 per hour, and AC-4 (plugging/inching) drops to 130 per hour. For a conveyor line cycling every 30 seconds, the AC-3 rate is fine; for a jogging station, you'll need to respect the AC-4 limit or the contactor will overheat.

The envelope is 214 mm high, 160 mm wide, and 225 mm deep. That forward clearance is the one that catches people — if the panel door has a deep-mounted disconnect or a busbar shield, check that 20 mm before you commit the layout. The coil connection uses screw-type terminals, and the auxiliary wiring accepts 2x (0.5–1.5 mm²) solid or 2x (0.75–2.5 mm²) stranded, with a maximum of 2x (0.75–4 mm²). Standard ferrule sizes fit; no special crimp tool needed.

Frequently asked questions

What are the key dimensions of the 3RT1076-6AT36?

The contactor measures 214 mm high, 160 mm wide, and 225 mm deep, with clearance requirements of 10 mm upward, 10 mm downward, 20 mm forward, and 10 mm at the sides.

What cable sizes does the 3RT1076-6AT36 accept?

The power terminals accept stranded cable from 70 to 240 mm². The auxiliary terminals accept 2x (0.5–1.5 mm²) solid or 2x (0.75–2.5 mm²) stranded, with a maximum of 2x (0.75–4 mm²).

MPN
3RT1076-6AT36