Overvoltage protection arrangement has series circuit with thermal fuse, varistor connecting two current conductors carrying voltage, similar series circuit in parallel with first series circuit

摘要

The overvoltage protection arrangement has a series circuit with a thermal fuse (T1) and a varistor (V1) connecting two current conductors (L1,N1) carrying a voltage, with a second similar series circuit (T2,V2) connected in parallel with the first series circuit. The two thermal fuses are designed with different triggering temperature values.