Surge arrester with a housing and at least one varistor as a diverting element

摘要

Surge arrester with a housing and at least one varistor as a diverting element (1), as well as a separating device (2) to separate the diverter elements (1) from the network, wherein the separating device (2) has a separation point formed as a solder joint, which in the electrical connection path (A, B) is integrated within the arrester, wherein the soldering a movable conductor section or a movable conductive bridge (3) with the diverter (1) on the one hand and the conductor section or the bridge (3) on the other hand with a first external electrical connection is further connected in parallel to the separating device (2) a Kommutierungszweig (8) is provided, which is permanently connected electrically in parallel, after reaching a defined voltage across the separating device (2) or in dependence on a predetermined separation distance of the separating device (2) is, characterized in that a biasing force generating means is formed as a spring, wherein the related force vector (F) acts on the conductor section or the bridge (3) in the separation direction, in Kommutierungszweig (8) a PTC element located and in the Kommutierungszweig (8) a further, second thermal separating device is arranged, which separates the PTC element upon reaching a certain temperature, so that by means of the second separating device in the Kommutierungszweig (8) in case of failure complete network separation can be realized.