Key Features of Three-Phase LENGTHs
- Three-phase track busway lengths for higher-capacity power distribution
- Supports 3-phase plug-in units, in addition to 1-phase plug-ins on the same system
- Continuous open slot enables flexible drop placement without rewiring
- Pre-wired construction simplifies installation and future expansion
- Designed for use with Track Busway 1-pole, 2-pole, and 3-pole power plug-ins
How Three-Phase LENGTHs Are Used in ROW Systems
Three-Phase LENGTHs are compatible with 1-pole, 2-pole, and 3-pole power plug-in units within ROW configurations.
They are required specifically when using 3-pole plug-ins, where all three hot conductors must be tapped to deliver full three-phase power.
See Three-Phase LENGTHs in Action
Watch how this product installs, connects, or configures with the Track Busway system
For additional installation scenarios, configuration examples, and system overviews, visit the Track Busway Video Library →
Three-Phase LENGTHs
SKU: Catalogue # (SKU): M20-3-40-277-07-G-3B
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USA TrackBusway® Three-Phase Lengths deliver scalable, overhead plug-in power for multi-circuit and high-load environments.
Each steel housing is pre-wired with three hot copper conductors, one neutral + an optional isolated ground, and factory sealed with end caps to form a self-contained grounded section ready for installation.
Power may continue through abutting sections using USA TrackBusway® Joiner Inserts, or additional feeds can be added anywhere using a USA TrackBusway® Line Feedwith integral overcurrent protection.
The continuous access slot accepts plug-in power taps like Power Drop Cords or Outlet Boxes anywhere along the run—no rewiring or downtime required.
Available in galvanized, white, or black finishes, and in lengths of 2.5', 3', 5', 7', and 10'.
If three-phase power drops are not required, you may want to explore single-deck lengths for 120/208Y single-phase power distribution.
Downloads – Three-Phase LENGTHs
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Need plug-in units? Browse Power Plug-Ins.
Track Busway is a modular overhead power distribution system built around pre-wired track busway lengths that suspend power where it’s needed in open-ceiling environments.
Each Track Busway layout is built from coordinated system components — including joiners, feeds, plug-in power drops, and supporting accessories — allowing projects to scale and adapt over time.
Track Busway transforms open ceiling spaces with an innovative system that eliminates traditional overhead power structures, simplifying installations while maximizing flexibility.
Pre-Wired Power Infrastructure: Deliver branch-circuit power exactly where it’s needed using pre-wired Track Busway lengths. Power drops can be added, moved, or reconfigured without rewiring to support evolving layouts.
Plug-and-Play Power Access: Tool-free, plug-in power taps with multiple receptacle options provide fast, reliable access to overhead power while maintaining code-compliant distribution.
Track Busway is a scalable, adaptable overhead power distribution solution designed to support changing equipment layouts and long-term system growth.
