Abstract: An assembly (10) for potential equalization in potentially explosive areas is described, having an outer housing (20), a gas discharge arrester (22), a short-circuiting device (30) and a fault indicator (42). At least the gas discharge arrester (22) and the short-circuiting device (30) are accommodated in the outer housing (20). The short-circuiting device (30) comprises at least one spring (32) and an actuating element (34), which is preloaded into a short-circuit position by the spring (32). The gas discharge arrester (22) has a base body (24) which is filled with a gas and connected to a first connecting part (16) via a thermally detachable connection (38). The fault indicator (42) is set up to indicate a tripping event of the short-circuiting device (30).

Abstract: The present invention provides an overvoltage protection spark gap assembly and a method for operating an overvoltage protection spark gap assembly. The overvoltage protection spark gap assembly comprises a first overvoltage protection spark gap (1) which has a first main terminal (1a) and a second main terminal (1b); a second overvoltage protection spark gap (1?) which has a third main terminal (1a?) and a fourth main terminal (1b?). The first main terminal (1a) can be connected to a first voltage line (S1) of a supply network via a first terminal contact (A1) and the fourth main terminal (1b?) can be connected to a second voltage line (S2) of the supply network via a second terminal contact (A2). The second main terminal (1b) and the third main terminal (1a?) are electrically connected to one another.

Abstract: The invention relates to a device combination for protecting electrical networks against overvoltages or overcurrents, comprising an essentially U-shaped base and at least one plug-in module, which can be plugged or pushed onto the base, wherein the base has connection terminals for connecting to the respective network and also has plug-in contacts, which are connected to the connection terminals and are complementary to mating plug-in contacts or contact tongues of the plug-in module, and the plug-in module has a housing which accommodates one or more lightning and/or overvoltage arresters, and the mating plug-in contacts or contact tongues pass through a floor side of the housing.

Abstract: A surge protection device comprises at least one disconnecting device provided in a housing, a heat-conducting element, an actuating element for actuating an indicating device, and a locking element, the heat-conducting element being in contact with the housing. The actuating element is fastened to the heat-conducting element by means of the locking element, and the fastening is configured such that when a predetermined temperature at the locking element is exceeded, the locking element is detached from the heat-conducting element and/or from the actuating element and releases the actuating element.

Abstract: The invention relates to a pluggable device combination for protecting against surges, having a socket-like bottom part of U-shaped cross section for receiving at least one plug module which accommodates a surge protection element, latching means which act between the plug module and the socket-like bottom part being provided, said latching means comprising first means which are formed on a biased joint on opposite sides of the plug module and respectively interact in a latching manner with associated second means on the bottom part, the latching connection being breakable by pressing the joint at the faces of the plug module, and the respective joint transitioning into an actuation area, the actuation areas additionally being formed opposite each other on the plug module in such a way that imaginary connecting lines between the actuation areas would form the shape of an at least approximate triangle.

Abstract: A surge protection device (14) comprises at least one disconnecting device (38) provided in a housing (50), a heat-conducting element (40), an actuating element (42) for actuating an indicating device (44), and a locking element (58), the heat-conducting element (40) being in contact with the housing (50). The actuating element (42) is fastened to the heat-conducting element (40) by means of the locking element (58), and the fastening is configured such that when a predetermined temperature at the locking element (58) is exceeded, the locking element (58) is detached from the heat-conducting element (40) and/or from the actuating element (42) and releases the actuating element (42) A modular surge protection system (10) is furthermore shown.

Abstract: The invention relates to a device combination for protecting electrical networks against overvoltages or overcurrents, comprising an essentially U-shaped base and at least one plug-in module, which can be plugged or pushed onto the base, wherein the base has connection terminals for connecting to the respective network and also has plug-in contacts, which are connected to the connection terminals and are complementary to mating plug-in contacts or contact tongues of the plug-in module, and the plug-in module has a housing which accommodates one or more lightning and/or overvoltage arresters, and the mating plug-in contacts or contact tongues pass through a floor side of the housing.

Abstract: An overvoltage protection device comprises at least one overvoltage protection unit having at least one contact lug as well as a mechanical disconnection apparatus that is activated in the event of a thermal overload. The mechanical disconnection apparatus comprises a connection element that can be moved from a closed position to a current-interrupting or voltage-disconnecting position by a slider that is preloaded by spring force.

Abstract: The invention relates to an overvoltage protection device (7), which comprises at least one overvoltage protection unit having at least one contact lug (14) and which comprises a mechanical disconnection apparatus that is activated in the event of a thermal overload, wherein the mechanical disconnection apparatus comprises a connection element. The connection element can be moved from a closed position to a current-interrupting or voltage-disconnecting position by means of a slide (4) preloaded by spring force, wherein the connection element consists of a pair of current-dividing metal bows (1, 1?), the ends of which directed toward the contact lug of the overvoltage protection unit extend in parallel and which accommodate the respective contact lug of the overvoltage protection unit in the centre of the bows, wherein the closed position is secured between the connection element and the contact lug in the region of the ends of the bows extending in parallel by means of a solder (3).

Abstract: The invention relates to a surge arrester which, in a housing (7), has at least one arrester element (3), in particular a varistor, a solder-fixed thermal disconnection point (5), which is connected to the arrester element, and a damage indicating device (11) for displaying the fault state, wherein the damage indicating device also queries the state of a thermal disconnection device, in particular a fuse, and presents the possible fault states of the arrester element and of the disconnection device mechanically in an OR combination in a suitable way. Furthermore the thermal disconnection device comprises a movable component, which is fixed by an indicator wire and is released after the melting or destruction of said wire. According to the invention, a guide part (9) for a compression spring (10) or similar force accumulator is provided on or in the housing.

Abstract: A surge protector includes a thermal separating device and an error display, and at least two first protection elements, particularly disk-shaped varistors (7), and at least one second protection element, particularly a gas arrester (9), wherein the first and the at least one second protection elements are switched in a Y arrangement. The surge protector further includes a device housing for accommodating the protection elements, and structure, such as a spring (11), for the mechanical biasing of the thermal separating device, wherein the thermal separating device has a low-melting solder, and the first protection elements (7) are disposed in the device housing such that a connection arm of a protection element (7) is positioned opposite the connection arm of the further protection element (7) at a distance, and the thermal separating device is predominantly positioned in the distance space (13) formed in such a manner.

Abstract: The invention relates to an overvoltage protection device having one or more parallel-connected voltage-limiting elements which are located in one physical unit, such as varistors, diodes or means of this type configured in the form of a disc, comprising a shell apparatus in order to electrically disconnect the overvoltage-limiting elements when they are thermally overloaded, and means for indication and/or signalling of the fault state which then occurs, wherein the switching apparatus is connected via a means which can be released thermally, such as adhesive or a solder, to a connecting contact of the at least one overvoltage-limiting element, and/or to an external terminal contact or plug contact. According to the invention, the switching apparatus is in the form of a solid U-shaped switching fork, the fork tines of which run essentially parallel to the side surfaces of the overvoltage-limiting element, holding the latter in the space between the tines.

Abstract: The invention relates to a surge arrester which, in a housing (7), has at least one arrester element (3), in particular a varistor, a solder-fixed thermal disconnection point (5), which is connected to the arrester element, and a damage indicating device (11) for displaying the fault state, wherein the damage indicating device also queries the state of a thermal disconnection device, in particular a fuse, and presents the possible fault states of the arrester element and of the disconnection device mechanically in an OR combination in a suitable way. Furthermore the thermal disconnection device comprises a movable component, which is fixed by an indicator wire and is released after the melting or destruction of said wire.

Abstract: The invention relates to a surge protector having a thermal separating device and an error display, and at least two first protection elements, particularly disk-shaped varistors (7), and at least one second protection element, particularly a gas arrester (9), wherein the first and the at least one second protection elements are switched in a Y arrangement, further comprising a device housing for accommodating the protection elements, and a means (11) for the mechanical biasing of the thermal separating device, wherein the thermal separating device has a low-melting solder, and the first protection elements (7) are disposed in the device housing such that a connection arm of a protection element (7) is positioned opposite the connection arm of the further protection element (7) at a distance, and the thermal separating device is predominantly positioned in the distance space (13) formed in such a manner.

Abstract: The invention relates to an overvoltage protection device having one or more parallel-connected voltage-limiting elements which are located in one physical unit, such as varistors, diodes or means of this type configured in the form of a disc, comprising a shell apparatus in order to electrically disconnect the overvoltage-limiting elements when they are thermally overloaded, and means for indication and/or signalling of the fault state which then occurs, wherein the switching apparatus is connected via a means which can be released thermally, such as adhesive or a solder, to a connecting contact of the at least one overvoltage-limiting element, and/or to an external terminal contact or plug contact. According to the invention, the switching apparatus is in the form of a solid U-shaped switching fork, the fork tines of which run essentially parallel to the side surfaces of the overvoltage-limiting element, holding the latter in the space between the tines.