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Siemens 3RT1056-6AM36-0UA0 — Contactors

Siemens 3RT1056-6AM36-0UA0 SIRIUS Power Contactor, Size S6,

MPN3RT1056-6AM36-0UA0
Active

Siemens SIRIUS power contactor, order code 3RT1056-6AM36-0UA0, Size S6, 200-220 V AC coil, screw-type terminals, screw fixing, active lifecycle.

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

Specifications

3RT1056-6AM36-0UA0 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6AM36-0UA0 — 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
3RT1056-6AM36-0UA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz200 ... 220 V
3RT1056-6AM36-0UA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6AM36-0UA0 — 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)
3RT1056-6AM36-0UA0 — 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
3RT1056-6AM36-0UA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6AM36-0UA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6AM36-0UA0 — Mechanical
ParameterValue
Width140 mm
Height172 mm
Depth170 mm
3RT1056-6AM36-0UA0 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

What the S6 frame and 200-220 V coil mean for your panel

The coil is rated for 200-220 V AC, so it pulls in reliably across that voltage window; the 0.8 holding factor at 50/60 Hz means it stays sealed down to about 160 V, giving you headroom against brownout dips. Clearance distances are specified: 10 mm upwards, 20 mm forwards, 10 mm sideways, 10 mm downwards. That's the air gap needed around the arc chamber for safe quenching — respect those when laying out the gland plate or adjacent components.

Switching duty and mechanical life

The contactor is rated for different switching frequencies depending on the load category: up to 800 operations per hour in AC-1 resistive duty, 750 in AC-3 motor starting, and 130 in AC-4 inching/plugging. The AC-3e rating matches the AC-3 figure at 750 ops/h. That tells you this contactor is designed for frequent motor starting — it can handle a conveyor or pump cycling every few seconds, not just a once-a-shift isolation switch. Mechanical life is typical at 10,000,000 operations. That's the no-load endurance; under load you'll get fewer, but it gives you a baseline for preventive replacement intervals in high-cycle applications like a pick-and-place cell.

Auxiliary switching and control circuit ratings

An auxiliary switch is built in. The control circuit contacts are rated for 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V. That covers typical PLC output signals or relay interposing — the 24 V rating is generous enough to drive a small contactor coil or indicator light without an extra interposer.

Frequently asked questions

What are the key dimensions of 3RT1056-6AM36-0UA0?

The contactor measures 172 mm height, 140 mm width, and 170 mm depth. Mounting clearance requires 10 mm above, 20 mm in front, 10 mm to the side, and 10 mm below.

Where can I buy 3RT1056-6AM36-0UA0?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What conductor sizes does the 3RT1056-6AM36-0UA0 accept?

The main power terminals accept stranded conductors from 25 to 120 mm². The auxiliary/coil terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²).

Will 3RT1056-6AM36-0UA0 drop into a panel specified for 3RT1055-6QF35?

Both are SIRIUS Size S6 contactors with screw fixing, so the mounting hole pattern and overall envelope are the same. The main difference is the coil voltage — the 3RT1055-6QF35 uses a different coil rating, so verify the control circuit voltage matches before substituting.

MPN
3RT1056-6AM36-0UA0