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Siemens 3RT1055-6QP35 — Contactors

Siemens 3RT1055-6QP35 SIRIUS Power Contactor, 200-277V Coil

MPN3RT1055-6QP35

Siemens SIRIUS 3RT1055-6QP35 power contactor, S6 frame size, 200-277 V AC 50/60 Hz coil, screw-type terminals, 3-pole, 170 mm depth, 140 mm width, 172 mm height.

StockContact for availability
Lead time3-5 Days wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RT1055-6QP35 — Identification
ParameterValue
Contactor frame sizeS6

Ratings & Performance

3RT1055-6QP35 — Ratings & Performance
ParameterValue
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

Control & Coil

3RT1055-6QP35 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.5
Rated value @ 50 Hz200 ... 277 V

Contacts & Poles

3RT1055-6QP35 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)

Protection & Coordination

3RT1055-6QP35 — 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)

Connection & Mounting

3RT1055-6QP35 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
Conductor cross-section, solid2x (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)
Side-by-side mountingYes

Durability

3RT1055-6QP35 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000

Environmental

3RT1055-6QP35 — Environmental
ParameterValue
Operating temperature range-25 ... +55 °C
Storage temperature range-55 ... +80 °C

Mechanical

3RT1055-6QP35 — Mechanical
ParameterValue
Width140 mm
Height172 mm
Depth170 mm

Specifications

3RT1055-6QP35 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

The 3RT1055-6QP35: The pick-up range is 0.8x to 1.1x of rated value, so at 200 V nominal the coil sees minimum 160 V and maximum 220 V before the magnet drops out. For a conveyor motor running at AC-3, that means one start every ~4.8 seconds continuous — well within a normal material-handling cycle, but a high-speed indexing application would exceed the AC-4 ceiling. The 10 A at 24 V figure is the limit for a single auxiliary circuit; daisy-chaining multiple loads across one contact reduces the current per load.

Mounting, clearances, and enclosure fit

Mounting is screw fixing only — no DIN-rail clip on this S6 frame. The unit bolts directly to the backplate through a single 9 mm hole. The 170 mm depth (172 mm height, 140 mm width) means the contactor occupies about 0.024 m³ of panel volume — plan the enclosure depth at least 190 mm to clear the forward arc space. Degree of protection is IP00 on the terminals, IP20 on the front with the cover or box terminal installed. In a panel with IP54 or higher rating, the contactor itself doesn't need a separate enclosure — the panel door provides the seal. For open-chassis installations, the IP20 front cover is mandatory.

Sourcing and lifecycle — active production, quoted to order

For a panel in an unconditioned enclosure in a hot climate, the 55 °C ceiling means the contactor must be derated above 40 °C ambient — the 1.1x full-scale factor at 55 °C is the thermal limit, not the continuous current rating.

Frequently asked questions

Where can I buy 3RT1055-6QP35 and get a price?

The 3RT1055-6QP35 is sourced to order against your BOM quantity through independent distribution.

MPN
3RT1055-6QP35