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Compact busbar trunking is a core component in low-voltage power distribution systems used for transmitting high currents. Its defining characteristics include a compact structure, efficient heat dissipation, a high degree of protection, and high current-carrying capacity. It is widely deployed in scenarios where space is limited, high currents are involved, and high levels of protection are required—distinguishing it significantly from air-insulated busbar trunking systems.

The primary function of air-insulated busduct systems is to safely, efficiently, and flexibly facilitate the centralized transmission of high currents. They serve as the backbone for low-voltage power distribution—handling both main feeder lines and branch tap-offs—while simultaneously offering advantages in heat dissipation, installation, and maintenance. These systems are ideally suited for dry, clean indoor environments within industrial facilities and commercial buildings.