An equipment isolation switch assembly (200) for use in a remote isolation system (10) for isolating an equipment item (20,21) comprising an equipment isolation switch (400) movable between a first position (NORMAL) in which said equipment item (20,21) is energized by an energy source (30) and a second isolated position (ISOLATE) in which said equipment item (20,21) is isolated from said energy source (30) and an actuating device (500) co-operable with the equipment isolation switch (400) to move it between said first and second positions wherein said isolation switch assembly (200) includes at least one securing means (291,405) for securing said actuating device (500) in co-operation with said equipment isolation switch (400) whenever in operative state,