Abstract: A device of protection against transient electrical overvoltages, including two voltage-limiting passive components, disconnectors sensitive to the state of these components and adapted to individually disconnect each end of life component therefrom, the components are joined in parallel between a first and a second terminal of the device, where the reference voltage of the first component is inferior to the reference voltage of the second component.

Abstract: A device for protecting an electrical installation from surges. The device includes a protective component for protecting from overvoltages and two thermal disconnectors. Each thermal disconnector includes a respective mobile contact suitable to move from a closed position to an open position to disconnect the protective component from the electrical installation, and a respective thermosensitive element for making the mobile contact move from the closed position to the open position when the temperature of the protective component exceeds a predetermined threshold.

Abstract: A device of protection against transient electrical overvoltages, including two voltage-limiting passive components, disconnectors sensitive to the state of these components and adapted to individually disconnect each end of life component therefrom, the components are joined in parallel between a first and a second terminal of the device, where the reference voltage of the first component is inferior to the reference voltage of the second component.

Abstract: An exemplary varistor is disclosed which includes at least two poles; a non-linear block; a conductive plate arranged on a main face of the block and having a protruding portion forming one of the poles; and an electrically insulating coating applied to the main face of the block. The part forming the connection pole emerges from the electrically insulating coating and has a braze surface extending above the electrically insulating coating; and the protruding part forming the connection pole is connected to the rest of the plate over at least half of the perimeter thereof.

Abstract: A device for protecting an electrical installation from surges. The device includes a protective component for protecting from overvoltages and two thermal disconnectors. Each thermal disconnector includes a respective mobile contact suitable to move from a closed position to an open position to disconnect the protective component from the electrical installation, and a respective thermosensitive element for making the mobile contact move from the closed position to the open position when the temperature of the protective component exceeds a predetermined threshold.

Abstract: A device for protecting an electrical installation from surges, includes two terminals, a protective component connected to the terminals, and a thermal disconnector having a conductive contact blade maintained in a first position in which the contact blade ensures an electrical connection between the protective component and one of the two terminals. The thermal disconnector can be provided for making the contact blade go to a second position when the temperature of the protective component exceeds a predetermined threshold, wherein the contact blade and the one of the two connection terminals are part of a single and same piece.

Abstract: An exemplary varistor is disclosed which includes at least two poles; a non-linear block; a conductive plate arranged on a main face of the block and having a protruding portion forming one of the poles; and an electrically insulating coating applied to the main face of the block. The part forming the connection pole emerges from the electrically insulating coating and has a braze surface extending above the electrically insulating coating; and the protruding part forming the connection pole is connected to the rest of the plate over at least half of the perimeter thereof.