Copper clad aluminum busbar is bimetal conductor developed to provide an economic and alternative to solid copper. CCA busbar is produced by hydrostatic extrusion process, and consist of solid core of electrical grade aluminum with a pressure bonded outer layer of high conductivity copper.

CCA busbar therefore offers economic and weight saving advantages over solid copper, while retaining the surface properties of a copper busbar. It is often possible to substitute a copper bar with a CCA busbar of equal dimensions. This yields the maximum cost saving.

All rectangular and round sections are produced using a nominal copper cladding of 15% by volume (37% by weight) with the exception of certain sizes of high aspect ratio which are produced with nominally 20% copper by volume (45% by weight).