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Busway

Pow-R-Way III busway

Pow-R-Way III busway is a scalable and efficient solution for connecting electrical equipment to maximize power distribution system performance. Busway’s modularity and speed of installation provides a resourceful solution for even the most challenging layout requirements compared to traditional cabling and conduit. Pow-R-Way III busway is ideal for both indoor and outdoor industrial and commercial applications including high-rise buildings, manufacturing plants and utility centers.

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Pow-R-Way III low-voltage busway design guide Pow-R-Way III low-voltage busway storage, installation and maintenance instructions
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Continuous Current Rating
Up to 5000 A Cu
Up to 4000 A Al
System Voltage Rating
Up to 600 V
Interrupting Rating
Up to 200 kA

Core features

  • Lightweight aluminum housing and compact design provides easier installation as compared to cable and conduit
  • Engineered-to-order based on a building’s layout, factoring in obstacles and surroundings to determine the most efficient way to connect and route the system
  • Customizable fittings available to match complex runs
  • Epoxy insulation process ensures optimum conductor and system protection
  • All bus plugs are polarized to prevent improper installation
  • Voltage drop is much lower than the equivalent cable and conduit allowing a more efficient use of energy

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

Download guide spec (26 25 00)

Learn about power system design basics

The importance of infrared thermography for busway

  • What is infrared thermography (IR), and how does it work?
  • Why use IR thermography as a condition-based maintenance tool?
  • Can actual target object temperatures be taken using an IR camera?
  • What is an IR window and how does it work?
  • Are IR cameras expensive? Do I need training to use one?
  • Why can’t I just scan the joints from the outside of the equipment without the special IR joint cover?
Get the answers
Download the IR thermography in busway whitepaper
Infrared-Camera.jpg
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The advantage of busway compared to cable and conduit

Busway provides a more flexible, effective and sustainable approach to power distribution.
Download the busway advantage
Read more about busway's considerable benefits vs. cable and conduit

Pow-R-Way III busway videos

Busway infrared joint cover

This new cover allows safe and efficient temperature reading of busway joints. Watch the video to learn more.

Sprinkler-proof vs. outdoor rated

Watch the video to learn about the differences between indoor, sprinkler-proof and outdoor rated busway and applicable conditions for busway installation.

Final field fit piece measurement

Learn how to measure the final field fit piece.

Related products

Specifications

Ratings

Continuous current

Up to 5000 A Cu

Up to 4000 A Al
System voltage
 Up to 600 V

Short circuit withstand

 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
 Aluminum housing, Feeder, Plug-in
Plug-in/Tap Off separation
 24”
Download Links
Two contractors review a building construction site

BIM models and drawings

Eaton offers Building Information Modeling (BIM)-friendly models for Pow-R-Way III busway to integrate into your drawings with ease.

Download Pow-R-Way III BIM
Additional BIM models and drawings 
  • 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 , 06/24/2025) 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 , 08/14/2024)
  • 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 , 11/01/2018)
  • 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 , 03/31/2025)
  • Busway comprehensive support
    Dedicated customer service every step of the way
    (PDF 1 MB , 06/24/2024)
  • 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 , 04/12/2024)
  • The busway advantage
    This document highlights the benefits of a more flexible, efficient and sustainable approach to power distribution.
    (PDF 115 KB , 01/29/2024)
  • 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 , 03/29/2024)
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Power-R-Way III accessories and plugs installation videos

 

    New to Busway?

    Learn about the fundamentals of busway

    Learn more about busway
    Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
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