A busbar is a metallic strip or solid bar (typically copper or aluminum) used inside switchgear, panels, or enclosures for distributing high electrical currents. Busbars are designed with sufficient stiffness—often supported using insulated standoffs—to facilitate cooling and allow flexible tap-off points without requiring additional cabling.
In modern electrical distribution, busbar systems offer a modular approach : instead of connecting each device with separate cables, devices are mounted via adapters directly onto the busbar. Standard IEC configuration sizes include 40 mm, 60 mm, 100 mm, and 185 mm spacing, with current capacities ranging from 300 A up to over 2,500 A depending on system design.
