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Siemens 3RT1055-2AV36 — Contactors

Siemens 3RT1055-2AV36 SIRIUS Power Contactor, Size S6, 380-4

MPN3RT1055-2AV36
Active

Siemens SIRIUS power contactor, 3RT1055-2AV36, Size S6, 380-420 V AC coil, spring-type terminals, screw fixing.

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

Specifications

3RT1055-2AV36 — Identification
ParameterValue
Contactor frame sizeS6
3RT1055-2AV36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V132 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V30 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1055-2AV36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz380 ... 420 V
3RT1055-2AV36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1055-2AV36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 355 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1055-2AV36 — 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
3RT1055-2AV36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1055-2AV36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1055-2AV36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1055-2AV36 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

The coil is wound for 380-420 V AC, and the main power terminals accept stranded cable from 25 to 120 mm² — sized for the higher-current branch circuits this frame serves.

Mounts via screw fixing (9 mm holes) on a vertical surface, rotatable ±90° or tiltable ±22.5° front-to-back. The body measures 172 mm high, 120 mm wide, 170 mm deep — plan the enclosure depth around that 170 mm figure, plus the 20 mm forward clearance for arc venting and the 10 mm side/downward clearances. Coil connections use spring-type terminals (2x 0.25-2.5 mm² solid or stranded), so no screwdriver needed on the control wiring.

Switching Performance & Duty

Arcing time runs 10-15 ms. The contactor handles up to 800 operations per hour in AC-1 (resistive) duty, 750/h in AC-3 (motor start/run), and 130/h in AC-4 (plugging/inching). 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 for pilot-duty signaling.

Environmental & Lifecycle

The lifecycle status is listed as current — this is an active catalog item, not a phase-out.

Frequently asked questions

How do I get current pricing and availability for 3RT1055-2AV36?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time.

What is 3RT1055-2AV36's listed depth?

The depth is 170 mm.

What is 3RT1055-2AV36's listed solid wire capacity?

The auxiliary/coil terminals accept 2x solid conductors from 0.25 to 2.5 mm².

Will 3RT1055-2AV36 drop into a panel specified around 3RT1055-6QF35 without rewiring?

Both are Size S6 contactors with the same mounting footprint and screw-fixing pattern, so the mechanical swap is straightforward. The coil voltage differs — this unit is 380-420 V AC versus the 6QF35's coil — so verify the control circuit voltage before installing.

MPN
3RT1055-2AV36