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Siemens 3RT1055-7AB36-0SF1 — Contactors

Siemens 3RT1055-7AB36-0SF1 SIRIUS Power Contactor, Size S6,

MPN3RT1055-7AB36-0SF1
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Siemens SIRIUS power contactor, order code 3RT1055-7AB36-0SF1, Size S6, 170 mm depth, spring-type coil terminals, screw fixing.

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

3RT1055-7AB36-0SF1 — Identification
ParameterValue
Contactor frame sizeS6
3RT1055-7AB36-0SF1 — 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
3RT1055-7AB36-0SF1 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz23 ... 26 V
3RT1055-7AB36-0SF1 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1055-7AB36-0SF1 — 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)
3RT1055-7AB36-0SF1 — Connection & Mounting
ParameterValue
Main circuit connectionbox terminal
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
3RT1055-7AB36-0SF1 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1055-7AB36-0SF1 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1055-7AB36-0SF1 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1055-7AB36-0SF1 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

It is a current-production part, so it remains a standard BOM line for new builds and replacements alike.

The contactor is rated for AC-3 switching at up to 750 operations per hour, which covers the duty cycle of most conveyor, pump, and fan applications. AC-4 duty is lower at 130 ops/h, reflecting the heavier arc stress of reversing or plugging service. The auxiliary contact block carries 10 A at 24 V, 2 A at 48/60 V, and 0.3 A at 220 V — enough for PLC inputs or relay coils in the control circuit. The coil is terminated with spring-type terminals, which speeds wiring and resists loosening under vibration. The main power terminals accept stranded conductors from 16 to 70 mm², sized for the S6 frame's current capacity.

Fastening is by screw fixing, not DIN-rail snap-on, so plan for a drilled backplate or mounting channel. Minimum clearances are 10 mm upward, downward, and to the side, and 20 mm forward — factor these into your gland-plate and bus-bar planning. Dimensions are 172 mm high by 120 mm wide by 170 mm deep.

MPN
3RT1055-7AB36-0SF1