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Siemens 3RT1056-6NP36-3PA0 — Contactors

Siemens SIRIUS 3RT1056-6NP36-3PA0 Power Contactor, S6, 200-2

MPN3RT1056-6NP36-3PA0
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Siemens SIRIUS power contactor, size S6, 3RT1056-6NP36-3PA0, 200-277 V AC coil, screw fixing, 172 x 120 x 170 mm.

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

3RT1056-6NP36-3PA0 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6NP36-3PA0 — 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
3RT1056-6NP36-3PA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.5
Rated value @ 50 Hz200 ... 277 V
3RT1056-6NP36-3PA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6NP36-3PA0 — 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)
3RT1056-6NP36-3PA0 — 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
3RT1056-6NP36-3PA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6NP36-3PA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6NP36-3PA0 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-6NP36-3PA0 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

It uses a 200-277 V AC coil and mounts via screw fixing, not DIN rail — so plan for a drilled backplate or mounting rail with 9 mm holes on a 120 mm width footprint.

This contactor is built for high switching frequencies: up to 800 operations per hour in AC-1 (resistive) duty, 750 in AC-3 (motor start/run), and 130 in AC-4 (plugging/inching). The AC-3e rating matches AC-3 at 750 ops/h, so it handles frequent motor starts without derating the coil. Coil pick-up and drop-out times are 80-90 ms on both AC and DC supplies, with arcing time between 10-15 ms. That means predictable contact closure timing for sequencing logic — useful when coordinating with upstream breakers or downstream auxiliaries. The auxiliary switch (built-in) handles 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V — enough for direct PLC input or relay coil drive without an interposing relay.

Wiring and integration details

Main power terminals accept stranded cable from 25 to 120 mm² — that's a serious lug range for a size S6 frame, covering motor feeds up to roughly 200 A depending on duty. The coil uses screw-type terminals, not spring-cage, so expect to torque down properly. Auxiliary wiring is via solid or stranded conductors: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm² per terminal. Keep the smaller gauge for signal-level aux circuits and the larger for interposing relays. That 20 mm forward clearance is often the one people miss when panel depth is tight.

For a BOM freeze or compliance audit, expect standard Siemens documentation: CE declaration, RoHS and REACH statements, and UL/CSA file numbers per the contactor family. No special PCN risk here.

Frequently asked questions

What are the physical dimensions?

Height 172 mm, width 120 mm, depth 170 mm. Screw fixing with 9 mm mounting holes.

What conductor sizes does the auxiliary circuit accept?

Solid or stranded: 2x 0.5-1.5 mm², 2x 0.75-2.5 mm², or max 2x 0.75-4 mm² per terminal.

MPN
3RT1056-6NP36-3PA0