PURPOSE: A thermal cut-off varistor is provided to prevent the risk of fire by preventing the overheating due to the slow deterioration by the external disturbance voltage of the level which does not reach the level of surge voltage. CONSTITUTION: A varistor main body(12) blocks the surge voltage from the outside. A first lead board(11) is electrically connected to the first electrode formed on the varistor main body. A second lead board(14) is electrically connected to the second electrode formed on the varistor main body. The second lead board comprises a joint(141), an elastic member(142), and a connector area(143).
