A breaking device for interrupting current includes an electrically conducting outer member, an electrically conducting inner member arranged radially inside the outer member with respect to a breaking axis and an electrically insulating or semiconducting breaking member arranged radially between the outer member and the inner member with respect to the breaking axis, where the breaking member is arranged to move along the breaking axis from a starting position to a protruding position in which the breaking member protrudes from a space within the outer member for interrupting a current between the outer member and the inner member and the breaking member includes an inner tubular element and an outer tubular element, where the outer tubular element is joined to an outer surface of the inner tubular element thereby defining a recess between the outer tubular element and the inner tubular element.

The invention relates to an overvoltage protection arrangement comprising a horn spark gap located in an insulating housing, with a deionization chamber for arc quenching, wherein the deionization chamber has a plurality of spaced quench plates and a trigger electrode is located in the ignition region of the horn spark gap, wherein a disconnecting device comprises a fusible link that is located in the region of the deionization chamber and is exposed there to a loading of a power follow-on current, wherein the fusible link holds a disconnecting element, preferably supported by spring force, in a first position, and on melting releases this disconnecting element in such a way that the disconnecting element adopts a second position wherein, on reaching the second position, an electrical connection to the trigger electrode is interrupted and the trigger electrode is thereby disconnected.

The invention relates to an overvoltage protection arrangement comprising a horn spark gap located in an insulating housing, with a deionization chamber for arc quenching, wherein the deionization chamber has a plurality of spaced quench plates and a trigger electrode is located in the ignition region of the horn spark gap, wherein a disconnecting device comprises a fusible link that is located in the region of the deionization chamber and is exposed there to a loading of a power follow-on current, wherein the fusible link holds a disconnecting element, preferably supported by spring force, in a first position, and on melting releases this disconnecting element in such a way that the disconnecting element adopts a second position wherein, on reaching the second position, an electrical connection to the trigger electrode is interrupted and the trigger electrode is thereby disconnected.

A pole assembly of a switching device is provided. The pole assembly includes a first interrupter unit operably connected to a pole plate of the pole assembly via first post insulators. The first interrupter provides a path for current flow through the first interrupter in a closed state and interrupts the current flow in an open state. A second interrupter unit is operably connected to the first interrupter unit and to the pole plate via second post insulators. The second interrupter allows the current flow through the first interrupter unit in an open state and grounds the switching device in a closed state. The pole assembly includes a dielectric shield physically disposable between and operably connected to the first post insulators and the second post insulators for uniformly distributing an electric field generated during operation of the pole assembly.

A pole assembly of a switching device is provided. The pole assembly includes a first interrupter unit operably connected to a pole plate of the pole assembly via first post insulators. The first interrupter provides a path for current flow through the first interrupter in a closed state and interrupts the current flow in an open state. A second interrupter unit is operably connected to the first interrupter unit and to the pole plate via second post insulators. The second interrupter allows the current flow through the first interrupter unit in an open state and grounds the switching device in a closed state. The pole assembly includes a dielectric shield physically disposable between and operably connected to the first post insulators and the second post insulators for uniformly distributing an electric field generated during operation of the pole assembly.

A surge protection device has at least one disconnecting device (34), at least one actuating device (36), an indicating device (40), and a shaft (38) mounted for rotation between at least a first position and a second position, the at least one actuating device (36) being variable between a first position and a second position. The shaft (38), the indicating device (40) and the actuating device (36) are formed in such a way and the actuating device (36), when in the first position, is fastened to the at least one disconnecting device (34) so as to be preloaded such that when the disconnecting device (34) is triggered, the actuating device (36) is released and triggers the indicating device (40) by means of the shaft (38). Further, a modular surge protection system is described.

A surge protection device has at least one disconnecting device (34), at least one actuating device (36), an indicating device (40), and a shaft (38) mounted for rotation between at least a first position and a second position, the at least one actuating device (36) being variable between a first position and a second position. The shaft (38), the indicating device (40) and the actuating device (36) are formed in such a way and the actuating device (36), when in the first position, is fastened to the at least one disconnecting device (34) so as to be preloaded such that when the disconnecting device (34) is triggered, the actuating device (36) is released and triggers the indicating device (40) by means of the shaft (38). Further, a modular surge protection system is described.

An electromagnetic relay includes a support member, a first fixed terminal, a second fixed terminal, a movable contact piece, a movable member. The support member is made of an insulating material. The first fixed terminal includes a first fixed contact and is supported by the support member. The second fixed terminal includes the second fixed contact and is supported by the support member. The movable contact piece includes a first movable contact and a second movable contact. The movable member is connected to the movable contact piece and includes a first overlapping portion made of an insulating material. The first overlapping portion is disposed between the first fixed terminal and the second fixed terminal. The first overlapping portion overlaps with the support member when viewed from a longitudinal direction of the movable contact piece in an open state where the first movable contact is separated from the first fixed contact.

A breaking device for interrupting current, the breaking device including an electrically conducting outer member; an electrically conducting inner member arranged radially inside the outer member with respect to a breaking axis; and an electrically insulating or semiconducting breaking tube arranged radially between the outer member and the inner member with respect to the breaking axis, the breaking tube being arranged to move along the breaking axis from a starting position to a protruding position in which the breaking tube protrudes from a space within the outer member for interrupting a current between the outer member and the inner member by means of the breaking tube.

A breaking device for interrupting current, the breaking device including an electrically conducting outer member; an electrically conducting inner member arranged radially inside the outer member with respect to a breaking axis; and an electrically insulating or semiconducting breaking tube arranged radially between the outer member and the inner member with respect to the breaking axis, the breaking tube being arranged to move along the breaking axis from a starting position to a protruding position in which the breaking tube protrudes from a space within the outer member for interrupting a current between the outer member and the inner member by means of the breaking tube.