The temperature rise of the fuse refers to the temperature rise value of the fuse when 1.1 times (110%) of the rated current flows through the fuse, that is, the value obtained by subtracting the normal temperature from the measured temperature.
The UL standard sets its upper limit at 75Co. Because the melt of the fuse is more sensitive to temperature, its melting point and impedance will change under a certain high temperature for a long time, and this change will affect the accuracy of the fuse. This is generally said fuse aging. It is very risky to use aging fuses in circuits, so we should pay attention to the temperature rise of fuses when making and applying fuses.
In the same way, we should also notice that even if the fuse that has been used for a long time does not ignite and blow, it may be aging, and it is best to stop replacing it at this time. In principle, fuses must be replaced periodically according to different applications.
Contact Person: Mr. CK Loh
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