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Siemens 3RT1056-6NP38-0PA5 — Contactors

Siemens SIRIUS 3RT1056-6NP38-0PA5 Power Contactor, S6, 200-2

MPN3RT1056-6NP38-0PA5
Active

Siemens SIRIUS, Power contactor, size S6, 3RT1056-6NP38-0PA5, 200 … 277 V AC coil, screw-type terminals, 170 mm depth, 120 mm width, 172 mm height.

Siemens 3RT1056-6NP38-0PA5 datasheet (PDF)
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

3RT1056-6NP38-0PA5 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6NP38-0PA5 — 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
3RT1056-6NP38-0PA5 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.6
Rated value @ 50 Hz200 ... 277 V
3RT1056-6NP38-0PA5 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6NP38-0PA5 — 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)
3RT1056-6NP38-0PA5 — 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
3RT1056-6NP38-0PA5 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6NP38-0PA5 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6NP38-0PA5 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-6NP38-0PA5 — Specifications
ParameterValue
At AC80 ... 90 ms

Product details

Siemens SIRIUS 3RT1056-6NP38-0PA5 – Size S6 Power Contactor, 200–277 V Coil

It measures 172 mm high, 120 mm wide, and 170 mm deep, and mounts by screw fixing on a vertical surface with ±90° rotation and ±22.5° tilt allowed.

Switching Capability and Duty Cycles

Maximum switching frequency varies by duty: 800 operations per hour under AC-1 (resistive), 750/h under AC-3 (squirrel-cage motor starting), 300/h under AC-2 (slip-ring motor), and 130/h under AC-4 (plugging/inching).

The main power circuit accepts stranded conductors from 25 to 120 mm²; the auxiliary/control circuit accepts solid or stranded wires in two sizes per terminal: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or max 2x (0.75–4 mm²). An auxiliary switch is included, and the contactor has a mechanical service life of 10 million operations typical.

Frequently asked questions

Where can I buy 3RT1056-6NP38-0PA5 and how do I get a price?

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

What is 3RT1056-6NP38-0PA5's listed depth?

The depth is 170 mm.

What solid conductor sizes does the auxiliary circuit accept?

The auxiliary circuit accepts 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or max 2x (0.75–4 mm²) solid or stranded conductors.

Will 3RT1056-6NP38-0PA5 drop into a panel specified around 3RT1055-6QF35 without rewiring?

No — the S6 frame (3RT1056) is physically larger than the S5 frame (3RT1055), so it will not fit the same mounting footprint or terminal layout without modifications.

What compliance documentation does Siemens provide for 3RT1056-6NP38-0PA5?

As a standard SIRIUS product, Siemens provides RoHS and REACH declarations, plus IEC/EN 60947-4-1 compliance documentation. Specific UL/CSA certifications should be confirmed from the product label or Siemens support.

MPN
3RT1056-6NP38-0PA5