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Siemens 3RT1055-6NF36 — Contactors

Siemens 3RT1055-6NF36 SIRIUS Power Contactor, 96-127V Coil,

MPN3RT1055-6NF36
Active

Siemens SIRIUS power contactor, 3RT1055-6NF36, Size S6, coil rated 96-127 V AC, screw-type terminals, 170 mm depth, 120 mm width, 172 mm height.

$274.32Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1055-6NF36 — Identification
ParameterValue
Contactor frame sizeS6
3RT1055-6NF36 — 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
3RT1055-6NF36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.6
Rated value @ 50 Hz96 ... 127 V
3RT1055-6NF36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1055-6NF36 — 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)
3RT1055-6NF36 — 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
3RT1055-6NF36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1055-6NF36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1055-6NF36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1055-6NF36 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

Wiring and Terminal Capacity

The 3RT1055-6NF36: Main power terminals accept stranded conductors from 25 mm² up to 120 mm², sized for the S6 frame's current rating. Auxiliary/control terminals accept solid or stranded wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²). Screw fixing to the mounting surface; allow 10 mm clearance upwards, downwards, and at the side, plus 20 mm forward for arc-chamber clearance.

Operating Conditions and Mechanical Life

Mechanical life is typical 10,000,000 operations. Maximum switching rates: 800 cycles/hour at AC-1, 750 at AC-3, 300 at AC-2, 130 at AC-4.

Coil and Switching Characteristics

Coil pick-up at 80% of rated voltage (0.8 initial value); dropout at 1.1x full-scale value. Operate time is 80-90 ms on both AC and DC supply. Arcing time 10-15 ms. Auxiliary switch is included as standard. Contact ratings for auxiliary contacts: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V.

Frequently asked questions

Where can I buy 3RT1055-6NF36 and get a price?

This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing.

What is the coil voltage for 3RT1055-6NF36?

The coil is rated for 96 to 127 V AC, with screw-type terminals.

What wire sizes does the main power terminal accept?

Main terminals accept stranded conductors from 25 mm² up to 120 mm². Auxiliary terminals accept 2x (0.5-1.5 mm²), 2x (0.75-2.5 mm²), or max 2x (0.75-4 mm²) solid or stranded.

MPN
3RT1055-6NF36