Copper Bus Bars are available in both high conductivity electrolytic tough pitch (JC-ETP®) and high conductivity Oxygen Free (OF) copper. Both JC-ETP® and OF are high purity copper with an electrical conductivity of approximately 101% IACS.  General Properties : Copper busbars and heavy duty busbars have material with minimum copper content of 99.9% as per IS-191 & IS 1897. Size: Width - 10 mm to 210 mm Thickness - Upto 1.5 mm to 15 mm Â