Double pole and four pole Changeover Switches made by SKE are specially designed for modern industrial use. Application involves control power from sources.Sheet Steel enclosures with best quality powder coating. The housing go through a rigorous anti - rust conditioning with seven tank system to ensure smooth and lasting finish against corrosive humid atmosphere.Best quality Brass, Phosphorus Bronze components and ETP copper contacts are heavily silver plated to improve the high conductivity and to protect from pollutants.