Patent ID: 8767368

Claim:
A protective element for interrupting electric current, the protective element comprising: an elastic member firmly adhered through a solder to a plurality of electrode terminals formed on a prescribed substrate in such a manner that a current-carrying path is divided into plural to form an electric current interruption portion, wherein the solder has a liquid-phase point higher than a mounting temperature at which the protective element is mounted to a protection target device, the liquid-phase point being higher than or equal to 260 degrees Celsius, wherein the elastic member is soldered onto the plurality of electrode terminals in a state that the elastic member maintains a level of stress allowing at least one of the plural electrode terminals to be separated therefrom by deformation of the solder even in a state where that the solder is not completely melted, wherein the elastic member is formed as a leaf spring member having conductivity and is in a substantially U-shape when being not urged, and wherein the elastic member includes a flexed portion to be firmly adhered to the plural electrode terminals through the solder in a state that the elastic member as a whole is urged in a substantially M-shape by flexing a side to be connected by urging two sides opposite to each other of the elastic member in the substantially U-shape.