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Siemens 3RT1056-6AP36-0UA0 — Contactors

Siemens SIRIUS 3RT1056-6AP36-0UA0 Power Contactor, Size S6,

MPN3RT1056-6AP36-0UA0
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Siemens SIRIUS 3RT1056-6AP36-0UA0 power contactor, Size S6, 220-240 V AC coil, screw-type terminals, screw fixing.

Siemens 3RT1056-6AP36-0UA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1056-6AP36-0UA0 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6AP36-0UA0 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V160 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
3RT1056-6AP36-0UA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz220 ... 240 V
3RT1056-6AP36-0UA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6AP36-0UA0 — 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)
3RT1056-6AP36-0UA0 — 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
3RT1056-6AP36-0UA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6AP36-0UA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6AP36-0UA0 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-6AP36-0UA0 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

The main circuit accepts stranded conductors from 25 to 120 mm², so it is sized for higher-current branch circuits.

Mounting is by screw fixing through a single 9 mm diameter hole. The enclosure dimensions are 172 mm high by 120 mm wide by 170 mm deep.

Switching performance and ratings

The contactor is rated for AC switching duty with operating times of 40 to 60 ms on both AC and DC control. Arcing time is specified at 10 to 15 ms. Maximum switching frequencies vary by duty class: 800 operations per hour for AC-1 (resistive), 300 for AC-2, 750 for AC-3 (standard motor starting), 130 for AC-4 (inching/plugging), and 750 for AC-3e. The mechanical service life is a typical 10,000,000 operations. The auxiliary switch is present and rated for 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V.

Frequently asked questions

What are the key dimensions for panel layout?

The contactor measures 172 mm high, 120 mm wide, and 170 mm deep. Required clearances are 10 mm upwards, 10 mm downwards, 10 mm at the side, and 20 mm forwards.

What wire sizes does the main circuit accept?

The main circuit accepts stranded conductors from 25 to 120 mm². Auxiliary circuits accept solid or stranded conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max. 2x (0.75 to 4 mm²).

What is the coil voltage and terminal type?

The coil is rated for 220-240 V AC and uses screw-type terminals.

MPN
3RT1056-6AP36-0UA0