Busbars are usually made from copper, however, savings through lower costs, lighter weight and simplified handling can be made by the use of other materials such as aluminium and cuponal.
A core of aluminum is pressed with a coat of copper, so that both form an inseparable unit. This will allow the positive characteristics of electrically highly conductive copper with the light weight of aluminum combined optimally.
Cuponal is a bi-metal composite material for use as electrical connection in switch cabinets, switchboards and distribution boards.