OVERVOLTAGE PROTECTION DEVICE HAVING AT LEAST ONE SURGE ARRESTER

摘要

The invention relates to an overvoltage protection device, comprising at least one surge arrester and one switchgear assembly, which is connected in series to the surge arrester and which can be triggered thermally, wherein the aforementioned components form a structural unit, and the thermal tripping means is arranged in the area of the expected heating up of the surge arrester when overloaded. According to the invention, the thermal tripping unit is configured as a stop element through which operating current or surge current does not flow. In the event of thermal overload, the stop element opens a releasing device of the switchgear assembly, wherein said switchgear assembly has an increased self-extinguishing capacity.

主权项

1. Overvoltage protection device comprising at least one surge arrester and a thermally triggerable switching device which is connected in series with the surge arrester, wherein the aforementioned components form a unit and the thermal triggering means is arranged in the area of the expected heating of the surge arrester when same is overloaded,
characterized in that the thermal trigger means is configured as a stop part not flown through by the operating current or surge current, which releases an unlocking mechanism of the switching device in the event of a thermal overload, same having an increased self-quenching capacity.