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Siemens 3RT1056-2NP36 — Contactors

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

MPN3RT1056-2NP36
Active

Siemens SIRIUS, power contactor, Size S6, 3RT1056-2NP36, rated coil voltage 200... 277 V, spring-type terminals, screw fixing, 170 mm depth, 172 mm height, 120 mm width.

$335.28Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1056-2NP36 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-2NP36 — 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
3RT1056-2NP36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.6
Rated value @ 50 Hz200 ... 277 V
3RT1056-2NP36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-2NP36 — 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)
3RT1056-2NP36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0,25 ... 2,5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1056-2NP36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-2NP36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-2NP36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-2NP36 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

The 170 mm depth and 172 mm height fit standard enclosure layouts; clearance requirements are 10 mm upwards, 10 mm downwards, 20 mm forwards, and 10 mm at the side.

Ratings that drive the selection

The AC-3 switching frequency of 750 1/h (and the same for AC-3e) means this contactor handles frequent motor starts — typical for conveyor or pump cycling — without overheating the coil or contacts. AC-4 at 130 1/h covers reversing or inching duty where the contacts break full motor current. AC-1 resistive loads can run at 800 1/h. Arcing time sits at 10... 15 ms, which keeps arc energy contained within the arc chamber.

Power circuit accepts stranded conductors from 25... 120 mm² — sized for the main feed on a Size S6 contactor. The coil and auxiliary wiring uses spring-type terminals accepting 2x (0.25... 2.5 mm²) solid or stranded.

Frequently asked questions

How do I get current pricing and availability for 3RT1056-2NP36?

Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels.

Will 3RT1056-2NP36 drop into a panel specified around 3RT1056-1AB36 without rewiring?

Both share the Size S6 frame and same mounting footprint (screw fixing, same clearance requirements), so the mechanical fit is identical. The coil voltage differs — 3RT1056-2NP36 uses 200... 277 VAC; verify the control transformer matches before swapping.

MPN
3RT1056-2NP36