| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable current limiting device by stabilizing the current limiting pulse-height value and current feeding performance of the device by stabilizing contact resistances between electrodes and a PTC element after current limiting operations are performed. SOLUTION: On a PTC element excluding vicinities of connections with the electrodes, a portion where an electrical resistance value per unit length acting on an electric current is made higher than that acting on the electric current in the vicinities of the connections with the electrodes is provided. In addition, the current limiting device is constituted so that no arc is generated in the connections between the PTC element and electrodes.
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