Insulated busbars are intended for the electrical and mechanical connection of neutral, protective, and phase conductors. They are used in switchboard assemblies or in process equipment as components. The contact part of the busbars is made of brass, clamping screws are made of galvanized steel, and the insulator is made of non-combustible plastic. When connecting multi-strand copper wires to the busbar, they must be terminated with sleeve terminals. Normal operating conditions for the busbars: - ambient temperature from –40 to +50 °C; - average relative humidity not more than 90%.