Air-Insulated Busbar Trunking System

Air-Insulated Busbar Trunking System is a low-voltage busbar using air as the primary insulation medium, with copper or aluminum busbars fixed and isolated by high-performance insulation brackets (polycarbonate, DMC) within a metal enclosure-maintaining sufficient air gaps and creepage distances between conductors and the shell. As one of the longest-standing, most technologically mature, and cost-competitive members of the busbar family, Air-Insulated Busbar Trunking System is renowned for its simple structure, excellent heat dissipation, intuitive installation/maintenance, and comprehensive specifications-retaining a stable market position in cost-sensitive, good-environment conventional industrial and civil building distribution projects as a cost-effective trunk solution.

The structural advantages of product include: a metal enclosure (galvanized steel or aluminum alloy) providing mechanical protection and partial electromagnetic shielding; internal insulation brackets securing phase conductors at fixed intervals; and ample internal space facilitating natural air convection. This design enables direct heat dissipation from conductors via radiation and convection-ensuring excellent long-term current-carrying capacity and stable temperature rise. Ventilated enclosure designs further enhance heat dissipation (typically IP40-IP54 rating).

Air-Insulated Busbar Trunking System is widely used in conventional industrial workshops (dry, clean mechanical processing and assembly lines), commercial and office buildings (cost-constrained medium-sized malls, office floor distribution), residential building risers (cost-effective vertical main busbars), and light industrial/storage facilities (logistics warehouses, light production workshops). It is ideal for retrofitting projects in existing dry indoor environments, offering excellent cost-performance, good heat dissipation, lightweight design, and easy maintenance-proven reliable through long-term market validation.