Protection device against overheating by overvoltage to a voltage limiter circuit

摘要

A protection device 3, 4, 5 against overheating by overvoltage to a voltage limiter circuit to be used, for example, such as protection against voltage surges on the lines of telecommunications. / p & & p & the protection devices of the line current epuvent be overheating by a disturbance due to a voltage surge, which may cause permanent deteriorations and a stoppage of operation. In accordance with the invention, it is this remedie difficulty by limiting the current obtained by means of the disturbance due to the voltage surge by means of a 3 or more elements of react at the temperature of the voltage limiter circuit 4 itself - same. / p & & p & the invention is characterized in that a heat conducting connection 5 is made between the voltage limiter circuit and the switching element. / p & & p & application in particular for the protection of the central offices telephone.