Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE479077ApublicationCriticalpatent/BE479077A/xx
H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material