High thermal efficiency electric switch and method for interrupting electric current

An electric switch comprising:

• a first and a second connection terminal for connecting the switch to an external circuit,
• a first switch assembly comprising two or more electric breaker elements connected in series to one another and to the first and the second connection terminal,
• a second switch assembly comprising at least one delayed electric breaker element connected in parallel to the first switch assembly,
• and wherein the second switch assembly is adapted so that it has less electrical resistance than the first switch assembly,
• a moving actuator made of insulating material associated with the first and the second switch assemblies to open or close them,
• and wherein the moving actuator is movable between a closed switch position in which electrical continuity is established between the first and the second connection terminals, and an open position in which current flow between said terminals is prevented,
• and wherein the second switch assembly is configured for being closed in the switch closing operation, after the first switch assembly closes, such that when the second switch assembly is closed, it short-circuits the first switch assembly,
• wherein the moving actuator is a rotor having an elongated body which is movably mounted inside a casing, and wherein the switch incorporates means for rotating the rotor inside the casing about an axis (X) without axial movement, and wherein moving contacts of the first switch assembly are mounted in said rotor and are jointly movable with the rotor.

An electric switch comprising:

• a first and a second connection terminal for connecting the switch to an external circuit,
• a first switch assembly comprising two or more electric breaker elements connected in series to one another and to the first and the second connection terminal,
• a second switch assembly comprising at least one delayed electric breaker element connected in parallel to the first switch assembly,
• and wherein the second switch assembly is adapted so that it has less electrical resistance than the first switch assembly,
• a moving actuator made of insulating material associated with the first and the second switch assemblies to open or close them,
• and wherein the moving actuator is movable between a closed switch position in which electrical continuity is established between the first and the second connection terminals, and an open position in which current flow between said terminals is prevented,
• and wherein the second switch assembly is configured for being closed in the switch closing operation, after the first switch assembly closes, such that when the second switch assembly is closed, it short-circuits the first switch assembly,
• wherein the moving actuator is a rotor having an elongated body which is movably mounted inside a casing, and wherein the actuator is configured for moving helically with respect to an axis X, and wherein moving contacts of the first switch assembly are mounted in said rotor and are jointly movable with the rotor.