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Siemens 3RT1076-2AU36 — Contactors

Siemens 3RT1076-2AU36 SIRIUS Power Contactor, Size S12, 240-

MPN3RT1076-2AU36
Active

Siemens SIRIUS power contactor, 3RT1076-2AU36, Size S12, screw fixing, 240-277 V AC coil, spring-type coil terminals, 225 mm depth.

Siemens 3RT1076-2AU36 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1076-2AU36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1076-2AU36 — 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
3RT1076-2AU36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz240 ... 277 V
3RT1076-2AU36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1076-2AU36 — 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)
3RT1076-2AU36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0,25 ... 2,5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1076-2AU36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1076-2AU36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1076-2AU36 — Mechanical
ParameterValue
Width160 mm
Height214 mm
Depth225 mm
3RT1076-2AU36 — Specifications
ParameterValue
At AC60 ... 100 ms

Product details

The coil is rated 240-277 V AC, with pickup at 80% of rated value, so it stays pulled in across typical line sags. Mechanical life is 10 million cycles typical, and the contactor is rated for AC-1 (500 operations/hour), AC-2 (170/h), AC-3 (420/h), and AC-4 (130/h) duty — the AC-3 figure governs motor switching, so you can run a conveyor or pump at that rate without oversizing.

Main power terminals accept stranded copper from 70 to 240 mm² — that's a heavy cable range, sized for the S12 frame's current capacity. Auxiliary contacts are present and rated: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V — check the load type against those limits.

Operating conditions and clearances

Frequently asked questions

What are the key dimensions of 3RT1076-2AU36?

Depth is 225 mm, height is 214 mm, width is 160 mm — the Size S12 frame. Allow 10 mm clearance above, below, and to the sides, plus 20 mm forward for arc venting.

What wire sizes does the 3RT1076-2AU36 accept?

Main power terminals accept stranded copper 70-240 mm². The coil uses spring-type terminals for 2x 0.25-2.5 mm² solid or stranded wire.

Where can I buy 3RT1076-2AU36?

This contactor is available to order through independent distribution. Submit an RFQ for current availability and pricing — stock and lead time are confirmed at quote time.

MPN
3RT1076-2AU36