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Siemens 3RT1056-6NB36-3PA0 — Contactors

Siemens 3RT1056-6NB36-3PA0 SIRIUS Power Contactor, S6, 170 m

MPN3RT1056-6NB36-3PA0
Active

Siemens SIRIUS power contactor, size S6, order code 3RT1056-6NB36-3PA0, screw fixing, 170 mm depth, 120 mm width, 172 mm height, stranded 25–120 mm².

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

3RT1056-6NB36-3PA0 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6NB36-3PA0 — 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 V30 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1056-6NB36-3PA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.5
Rated value @ 50 Hz21 ... 27.3 V
3RT1056-6NB36-3PA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6NB36-3PA0 — 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)
3RT1056-6NB36-3PA0 — 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
3RT1056-6NB36-3PA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6NB36-3PA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6NB36-3PA0 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-6NB36-3PA0 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

SIRIUS S6 power contactor — panel-fit and switching duty

Its 170 mm depth, 120 mm width, and 172 mm height fit the S6 frame envelope, accepting stranded conductors from 25 to 120 mm² on the main poles. Opening time is 80 to 90 ms on both AC and DC control, and arcing time runs 10 to 15 ms — figures that matter for coordinating upstream protection and predicting contact wear in high-cycle applications. Switching frequency varies by duty: 800 operations/hour at AC-1 (resistive loads), 750 ops/h at AC-3 (squirrel-cage motors), and 130 ops/h at AC-4 (plugging/inching).

The auxiliary switch is included; its rated values are 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V. Solid and stranded auxiliary wiring accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²). The main power terminals take stranded 25 to 120 mm².

Frequently asked questions

What is the depth of 3RT1056-6NB36-3PA0?

The depth is 170 mm, with a width of 120 mm and height of 172 mm.

What wire sizes does the main power terminal accept?

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

Where can I buy 3RT1056-6NB36-3PA0 and how is it quoted?

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

MPN
3RT1056-6NB36-3PA0