The invention relates to a surge protection device ensemble comprising a surge protection device having an overvoltage protection means in a first housing, wherein the first housing has at least two connections for contacting the overvoltage protection means, characterized in that the surge protection device ensemble also has a fuse module having a fuse in a second housing, wherein the second housing has at least two connections for contacting the fuse, characterized in that the second housing having one of the connections of the fuse module is inserted in a form-fitting manner into one connection of the at least two connections of the surge protection device, wherein the fuse module provides an electrical connection on the inserted side between the fuse module and the surge protection device.

This device consists of a housing (1) made of electrically insulating material, in which a fuse (6) is provided with at least one main fuse wire (7) located in its cavity. The main fuse wire (7) is electrically conductively connected at one end to at least one connecting pin (2) which is led out of the housing (1) and at the other end it is electrically conductively connected to at least one terminal (3) located in at least one cavity (4) formed in the housing (1). The shape of the connecting pin (2) is adapted for connection to the protected device.

A thermal fuse may comprise an electrode and a conductor separated by a phase change material. The electrode may be formed from a conductive material that generates hydrogen when exposed to water or hydrogen peroxide. The phase change material may release water or hydrogen peroxide at or above an activation temperature.

A thermal fuse may comprise an electrode and a conductor separated by a phase change material. The electrode may be formed from a conductive material that generates hydrogen when exposed to water or hydrogen peroxide. The phase change material may release water or hydrogen peroxide at or above an activation temperature.

A thermal fuse may comprise an electrode and a conductor separated by a phase change material. The electrode may be formed from a conductive material that generates hydrogen when exposed to water or hydrogen peroxide. The phase change material may release water or hydrogen peroxide at or above an activation temperature.

An electrical fuse assembly includes electrically conductive first and second electrodes, and a bimetallic fuse element. The bimetallic fuse element electrically connects the first and second electrodes. The bimetallic fuse element is configured to disintegrate, and thereby disconnect the first electrode from the second electrode, in response to a current exceeding a prescribed trigger current of the bimetallic fuse element for at least a prescribed duration.

An electrical fuse assembly includes a housing defining a hermetically sealed chamber, first and second terminal electrodes mounted on the housing, a gas contained in the hermetically sealed chamber, a fuse element electrically connecting the first and second terminal electrodes, and at least one spark gap between the first and second terminal electrodes. The fuse element and the at least one spark gap are disposed in the hermetically sealed chamber.

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 a system for protecting an electrical source or an electrical load, having a module comprising an input and an output, and an electronic safety device for the load that can be connected to the source. The module also comprises a voltage monitoring unit, a current monitoring unit, and semiconductor switching units and controllers associated therewith. According to the invention, in order to selectively apply the protection to the source or the protection to the load, a unit for electrical mirroring on the circuit side is provided so that in the event of source protection, the current monitoring unit is applied at the input end and the voltage monitoring unit is applied at the output end, and in the event of load protection, the voltage monitoring unit is applied at the input end and the current monitoring unit is applied at the output end.

The invention relates to an overvoltage protection arrangement comprising a horn spark gap located in a housing, with a chamber for arc quenching, wherein a trigger electrode is located in the ignition region of the horn spark gap, wherein a disconnecting element is provided that interrupts a connection between a trigger circuit and the trigger electrode, and thus disconnects the trigger electrode, wherein the disconnecting element is tripped or controlled by an evaluation unit that is subject to and reacts to the loading of a power follow-on current.