| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric wire fuse in which current limiting effects can be obtained without using an arc-extinguishing material, in the electric wire fuse which comprises inner and outer double fuse tubes and in which a terminal metal fitting for electric wire connection is projected from both end openings of the outer tube and both the end openings are sealed with an outer cap, and a fuse element is connected between these terminals inside of the inner tube.SOLUTION: Between an inner surface of an outer cap and protecting caps in both ends of an inner tube, a high-melting metal ring whose heat conductivity is low is provided while sealing a gap with an inner wall of an outer tube with an insulative sealing body such as a silicon ring. |
