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Siemens 3RT5056-6AR36 — Contactors

Siemens 3RT5056-6AR36 SIRIUS Power Contactor, 440-480 V Coil

MPN3RT5056-6AR36

Siemens SIRIUS power contactor, order code 3RT5056-6AR36, size S6, 440-480 V AC coil, screw terminals, IP00/IP20 front, 65 kW at 690 V.

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

Specifications

3RT5056-6AR36 — Identification
ParameterValue
Contactor frame sizeS6
3RT5056-6AR36 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 690 V65 kW
Rated value @ 230 V6 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT5056-6AR36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz440 ... 480 V
3RT5056-6AR36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT5056-6AR36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 355 A
Short-circuit coordination type 2, fusefuse gL/gG: 315 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT5056-6AR36 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT5056-6AR36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT5056-6AR36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RT5056-6AR36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT5056-6AR36 — Specifications
ParameterValue
At AC2 000 1/h

Product details

It carries a 65 kW rating at 690 V (cite:) and a 70 kW rating at 230 V at 60 °C (cite:), so it handles heavy induction motors, pumps, and compressors in the 50-70 kW range depending on line voltage.

Mounts via screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. Side-by-side mounting is permitted. The enclosure rating is IP00 overall, IP20 on the front with a cover or box terminal. Dimensions: 172 mm high, 120 mm wide, 170 mm deep.

Electrical ratings and switching life

The main current circuit uses screw-type terminals (cite:) accepting up to 95 mm² conductors at 40 °C or 60 °C (cite:,). Electrical life varies by duty: 800 cycles/hour at AC-1 (resistive), 750 at AC-3 (motor starting), and 130 at AC-4 (plugging/inching) (cite:,). The integrated varistor surge suppressor (cite:) clips coil-switching transients — no external snubber needed for most panels. Auxiliary contacts are included (cite:), with instantaneous switching rated at 6 A at 24 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V (cite:,).

Frequently asked questions

What is the depth of 3RT5056-6AR36?

The depth is 170 mm (cite:).

What is the width of 3RT5056-6AR36?

The width is 120 mm (cite:).

Will 3RT5056-6AR36 drop into a panel specified around 3RT5056-6AM36 without rewiring?

Both are size S6 SIRIUS contactors with the same mounting footprint (screw fixing, same dimensions), so mechanical fit is identical. The difference is the coil voltage: 3RT5056-6AR36 uses a 440-480 V AC coil, while the 6AM36 variant uses a different coil voltage. If the panel's control voltage matches 440-480 V AC, it drops in without rewiring; otherwise, the coil circuit must be adapted.

MPN
3RT5056-6AR36