The Blandon Systems range of Compact Manual Change Over Switches cover sizes from 20 to 125 Amps. The switches have been designed to meet the requirements for manual transfer between two supply sources. Usually Mains (utility suppy) and a generator. The switch is housed in a robust mild steel enclosure with a removable front door.The panels incorporate a 3 position switch, this gives a center OFF position, and selection of source ( I ) source ( II ). The handle can be padlocked in the OFF position to prevent unauthorized use.