Importance

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Abstract

The invention relates to a space-limited protection module with at least two overvoltage protection elements in parallel current branches, wherein the protection module comprises a local multistage indicator for indicating at least one operating state, a warning state and a defect state, wherein the parallel switched overvoltage protection elements are arranged on a circuit board in electrical connection to conductor tracks of the circuit board and attached in a thermally softenable manner, wherein the first overvoltage protection element is associated with a first force accumulator and the second overvoltage protection element is associated with a second force accumulator, which in the soldered state exerts a force on the respective overvoltage protection element in parallel with the surface of the circuit board, so that in the event of a heating of an overvoltage protection element beyond the softening point of the thermal adhesion the respective overvoltage protection element is displaced sideways, so that an electrical connection to the conductor tracks of the circuit board is interrupted, wherein an interruption of the electrical connection of the second overvoltage protection element is always signaled as a defect state while the interruption of just the electrical connection of the first overvoltage protection element is signaled as a warning state.

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First Claim