Patent attributes
A dual protection device for a circuit includes a first protection unit and a second protection unit functioning independently. The first protection unit includes an elastic contact piece which has a first contact point. A first conductive member has a second contact point to contact with the first contact point. The elastic contact piece is deformed and bent toward an opposite direction to separate the first contact point from the second contact point when overloaded. A second protection unit has a second conductive member which is connected between the second terminal and the first conductive member. A fuse member and a biasing member are disposed at two opposite sides of the second conductive member. When the fuse member melts due to high temperature, the second conductive member is pushed by the biasing member to be separated from the second terminal.
