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H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling
Vorrichtung zur selbstthätigen Regelung der elektromotorischen Kraft und des Stromes in elektrischen Leitungen, welchen der Strom aus zwei Elektrizitätsquellen zufliefst