Abstract: An electrical disconnect device includes: a pair of stationary terminals; a movable bridge that is movable between a closed position for making electrical contact between the pair of stationary terminals and an open position for breaking electrical contact; an electromagnetic control system that is switched between an open state in which the movable bridge is positioned in its open position, and a closed state in which it is positioned in its closed position; and a manual drive unit that are drivable between an operational position in which the movable bridge is free to move between its open and closed positions, and a forced-open position in which the manual drive unit holds the movable bridge spaced apart from the pair of stationary terminals. The manual drive unit can be placed in a forced-closed position in which it blocks the movable bridge against the pair of stationary terminals.