SELVO 63A Offload Double Pole Changeover switches are aesthetically designed and are fitted with excellent quality materials, These are operating using a strong operating handle for safe & reliable transfer of power from the main source to another and vice versa. The contacts are made out of electrolytic copper & brass, the contacts and terminals are silver coated for better conductivity. Utilizing top-quality porcelain as well as provision of the terminal cover shroud to prevent accidental contact with live parts . Provision for door interlocking which ensures that the door cannot be open when the switch is in ON position, therefore providing safety to humans. Flame retardant body to prevent chances of accidents due to overloading conditions.