Busbars with insulator type SHNI are designed for electrical and mechanical connection of neutral, protective, and phase conductors. Structurally, SHNI busbars are made of a brass busbar mounted on a plastic insulator or in an insulator made of self-extinguishing plastic. Normal operating conditions for the busbars are: - ambient temperature from –40 to +50 C; - average relative humidity not more than 90%.