Bus plugs are commonly used in industrial plants, warehouses, manufacturing facilities, commercial buildings, and large electrical distribution systems. When a bus plug fails or needs to be upgraded, finding the correct replacement is important because busway systems are not universal.
A bus plug must match the busway manufacturer, series, voltage, amperage, mounting style, jaw design, grounding arrangement, and connection style.
Ampstate supplies replacement bus plugs, fusible bus plugs, breaker bus plugs, disconnect bus plugs, and industrial electrical equipment for customers across Canada and the USA.
Common Bus Plug Search Terms
Customers may search for bus plugs using terms such as:
- Square D bus plug
- Siemens bus plug
- Siemens Sentron bus plug
- Eaton bus plug
- Eaton Pow-R-Way bus plug
- Cutler-Hammer bus plug
- Westinghouse bus plug
- GE bus plug
- ITE bus plug
- Bulldog bus plug
- Fusible bus plug
- Breaker bus plug
- 100A bus plug
- 200A bus plug
- 400A bus plug
- 600A bus plug
- 800A bus plug
What Is a Bus Plug?
A bus plug is a removable electrical device that connects to a busway or bus duct system. It allows power to be tapped from the busway and distributed to equipment such as machines, panels, motors, disconnects, transformers, or production lines.
Common bus plug types include:
- Fusible bus plugs
- Breaker bus plugs
- Non-fusible bus plugs
- Disconnect bus plugs
- Plug-in busway units
Why Compatibility Matters
Bus plugs are designed for specific busway systems. A bus plug from one manufacturer usually will not fit another manufacturer’s busway. Even within the same manufacturer, different series can have different mounting details, jaw configurations, enclosure sizes, and safety interlocks.
Before buying a replacement bus plug, always confirm the busway type.
Key Information Needed for a Bus Plug Quote
To identify the correct replacement, send:
- Busway manufacturer
- Busway series
- Existing bus plug photos
- Bus plug nameplate photo
- Busway nameplate photo
- Amp rating
- Voltage rating
- Number of poles
- Fusible or breaker type
- Indoor or outdoor enclosure
- Mounting orientation
- Required quantity
Photos of the jaw/stab area and the busway plug-in opening are especially useful.
Common Bus Plug Ratings
Bus plugs are commonly found in ratings such as:
- 30A
- 60A
- 100A
- 200A
- 400A
- 600A
- 800A
The replacement bus plug should be selected based on the equipment load, conductor size, protection requirements, and available system capacity.
Replacement Options
Depending on the busway system, replacement options may include tested used, refurbished, rebuilt, surplus, or equivalent bus plugs. This is common for older Square D, Siemens, GE, Eaton, ITE, Westinghouse, Cutler-Hammer, and Bulldog busway systems.
Bus Plug Replacement Support from Ampstate
Ampstate supplies industrial bus plugs, breaker bus plugs, fusible bus plugs, busway accessories, disconnects, breakers, and replacement electrical equipment.
To request a quote, send photos, nameplate details, voltage, amperage, busway series, and quantity required.
