Heat Shrink Bus bar Insulating Tube can avoid short circuit fault caused by small animals such as mice, snakes etc. Prevent bus bar from chemical corrosion effected by strong acid, alkali, salt etc. Avoid accidental injure to overhaul persons when they enter electriferous clearance by mistakes. Provide excellent insulation performance to supply enquired flashover protection for the bas bar system. Solve the problem of insulating among bus bars in bus duct. Color: Red, yellow, green, black.