| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuse equipped with an alarm contact capable of reducing a current flowing in an alarm contact display wire even in a high-frequency region, and improving high-frequency current characteristics without cutting off the alarm contact display wire by high-frequency components contained in a commercial current. Ž<P>SOLUTION: The fuse equipped with the alarm contact includes: a fuse element equipped with an inductor and a parasitic resistor; the alarm contact display wire which is connected to the fuse element in parallel, bypasses the high-frequency component of a lightning surge current flowing in the fuse element, and includes the inductor and the parasitic resistor; and an additional circuit set so that a ratio of impedance to combine the additional circuit with the alarm contact display wire and the impedance of the fuse element becomes 100 times or more in 1 MHz. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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