Electric switch comprising: at least one pair of fixed contacts (4,4') and at least one moving contact movable between a closed position of the switch in which it establishes electrical continuity with the fixed contacts (4,4'), and an open position in which current circulation is prevented, characterized in that it further comprises: a rotor made of an insulating material and having an outer surface and an axis, wherein the rotor is axially movable about its axis, at least two moving contacts (9,9',9") assembled in the rotor, wherein each. moving contact (9,9',9") has two ends and it is configured such a first end is accessible through a first area on the outer surface of the rotor, and a second end is accessible through a second area on the outer surface of the rotor, and where the moving contacts (9,9',9") are placed in the rotor at a different axial position with respect to the axis of the rotor, at least a first pair of conductor soleplates (19,19',42,42') arranged adjacent to one another and aligned according to the longitudinal span of the rotor, and arranged for being contacted by a first end of the moving contacts (9,9',9"), and where one of these conductor soleplates (19,19',42,42') is connected with a first fixed contact (4,4') of the switch, at least a second pair of conductor solepleates (19,19',42,42') arranged adjacent to one another and aligned according to the longitudinal span of the rotor, and arranged for being contacted by a second end of the moving contacts (9,9',9"), and where one of these conductors soleplates (19,19',42,42') is connected with a second fixed contact (4,4') of the switch, where the moving contacts (9,9',9") and the soleplates (19,19',42,42') are relatively placed with respect to one another such that, as the rotor moves axially, in a first axial position of the rotor, the moving contacts (9,9',9") are connected to one another in series through the soleplates (19,19',42,42'), and in a second axial position of the rotor, the moving contacts (9,9',9") of the rotor are connected to one another in parallel through the soleplates (19,19',42,42'). a rotor made of an insulating material and having an outer surface and an axis, wherein the rotor is axially movable about its axis, at least two moving contacts (9,9',9") assembled in the rotor, wherein each. moving contact (9,9',9") has two ends and it is configured such a first end is accessible through a first area on the outer surface of the rotor, and a second end is accessible through a second area on the outer surface of the rotor, and where the moving contacts (9,9',9") are placed in the rotor at a different axial position with respect to the axis of the rotor, at least a first pair of conductor soleplates (19,19',42,42') arranged adjacent to one another and aligned according to the longitudinal span of the rotor, and arranged for being contacted by a first end of the moving contacts (9,9',9"), and where one of these conductor soleplates (19,19',42,42') is connected with a first fixed contact (4,4') of the switch, at least a second pair of conductor solepleates (19,19',42,42') arranged adjacent to one another and aligned according to the longitudinal span of the rotor, and arranged for being contacted by a second end of the moving contacts (9,9',9"), and where one of these conductors soleplates (19,19',42,42') is connected with a second fixed contact (4,4') of the switch, where the moving contacts (9,9',9") and the soleplates (19,19',42,42') are relatively placed with respect to one another such that, as the rotor moves axially, in a first axial position of the rotor, the moving contacts (9,9',9") are connected to one another in series through the soleplates (19,19',42,42'), and in a second axial position of the rotor, the moving contacts (9,9',9") of the rotor are connected to one another in parallel through the soleplates (19,19',42,42').