Masterpact Switch-disconnectors - High current switch disconnectors from 630 A to 6300 A The Masterpact switch-disconnectors range is characterised by its optimised dimensions and its high performances. Aiming at standardising electrical switchboards at a time when installations are increasingly complex, Masterpact provides an unequalled simplicity, both concerning choice and installation. Benefits Safety and protection Applications The Masterpact switch-disconnectors perform control and disconnection of high current electrical distribution circuits: Source coupling Distribution Source changeover Disconnection