| 摘要 |
A stretched fuse device comprising a brass wire made of 45 to 48 percent of zinc and copper as the remainder with a beta phase accounting for more than 90 percent of said alloy, said fuse being stretched in introducing electric current therethrough, wherein the cutoff of said fuse enables, if necessary, either or both of the closure of an alarm circuit and the indication of said cutoff to be effected.
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