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Busway

Pow-R-Way III busway

With a customisable and flexible design, Pow-R-Way III busway is the preferred means of connecting electrical equipment to maximise power distribution system performance. Its ease of use and speed of installation provides an efficient solution for even the most challenging layout requirements, compared to traditional cabling conduit solutions.

Watch this video to find out how to measure the final field-fit piece.

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Find out more about busway fundamentals
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Continuous current rating
Up to 5000A Cu
Up to 4000A Al
System voltage rating
Up to 600V
Interrupting rating
Up to 200kA

Core features

  • Lightweight and compact design allows easy installation
  • Housing is combined in a true sandwich design in both plug-in and feeder busway, contributing to improved coordination and high short-circuit ratings
  • Epoxy insulation process ensures optimum conductor and system protection
  • All bus plugs are polarised to prevent improper installation
  • Having only one or two conductors per phase, the Pow-R-Bridge joint design makes the voltage drop much lower than that associated with cable, allowing a more efficient use of energy

View design guide (layouts, technical data and application information)

Download guide spec (26 25 00)

Find out about power system design basics

Busway infrared joint cover

This new cover allows safe and efficient temperature reading of busway joints.

The differences between indoor, sprinkler-proof and outdoor-rated busway

Watch the video to find out about the applicable conditions for busway installation.

Calculate the savings

Find out how busway reduces installation costs compared to traditional cable management systems
Calculate

Read case study

Eaton’s busway enables smooth operations and new levels of data centre flexibility
Find out more

The busway advantage

See how busway stacks up against conventional cable.

Find out more

Infrared thermography in busway

Discover what infrared thermography is and how it works
Read white paper

Find out how to measure the final field-fit piece

Watch the video 

Eaton's busway solutions

Eaton’s comprehensive portfolio of busway solutions offers endless possibilities for meeting today’s ever-changing power requirements

Find out about the busway installation process

Watch the video 

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    Specifications

    View design guide (layouts, technical data and application information)

    Download guide spec (26 25 00)

    Find out about power system design basics

    Ratings

    Continuous current

    Up to 5000A Cu

    Up to 4000A Al
    System voltage
    		 240–600 V

    Short circuit tolerance

    		 Up to 200 kA

    Standards

    Third-party approval/recognition

    UL 857 and CSA C22.2 no. 27 listed
    Seismic qualification
    		 CBC, IBC

    Devices

    Maintenance solution

    IR bridge joint window

    Enclosure

    Enclosure type

    Indoor, outdoor, sprinkler-proof
    Construction
    		 Aluminium housing, feeder, plug-in
    Plug-in/tap-off separation
    		 610mm/24”
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    • Maximized busway performance
      This document details the integration of Power Defense breakers into Pow-R-Way III plug-in units for efficient and intelligent power distribution, highlighting product offerings, industry applications, standards, and customer benefits.
      (PDF 339 KB , 11/11/2024)
    • Pow-R-Way III 100% rated 800 A bus plug
      Eaton’s 100% rated, 800 A Power Defense™ Frame 4 (PDF4) breaker bus plug for Pow-R-Way III busway delivers maximum flexibility in power distribution while reducing project costs. It is designed to avoid an over-engineered solution, saving labor and materials
      (PDF 418 KB , 24/06/2025) New
    • Pow-R-Way III: DC rated busway
      This document describes how Pow-R-Way III direct current power distribution system reduce heat and increase efficieny.
      (PDF 330 KB , 14/08/2024)
    • Safe, efficient busway maintenance and troubleshooting with Pow-R-Way III infrared window
      This document describes how Eaton’s new infrared window solution for the Pow-R-Way III busway system allows personnel to safely scan bus joints without de-energizing the busway.
      (PDF 693 KB , 01/11/2018)
    • Pow-R-Way III busway design guide
      This design guide provides dimensions, layout examples, technical specifications and application information for Pow-R-Way III busway. The information in this document supersedes section 24 of the Consulting Application Guide (CAG).
      (PDF 6 MB , 31/03/2025)
    • Busway comprehensive support
      Dedicated customer service every step of the way
      (PDF 1 MB , 24/06/2024)
    • Elevate data center power distribution with busway
      Data centers are known for their high power consumption. The use of busway for power distribution can offer several advantages, including reduced energy losses, improved airflow, scalability, reliability and safety. In addition, busway can help reduce maintenance costs, extend equipment life and improve environmental impact.
      (PDF 2 MB , 12/04/2024)
    • The busway advantage
      This document highlights the benefits of a more flexible, efficient and sustainable approach to power distribution.
      (PDF 115 KB , 29/01/2024)
    • Busway line card
      Line Card for Eaton’s innovative Busway family featuring products capable of meeting any low to medium voltage application in an ever changing power distribution market.
      (PDF 617 KB , 29/03/2024)
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