How do high ambient temperatures affect the current rating of a fuse link?
A fuse link is a thermal device and as such may require some de-rating when used at elevated ambient temperatures. Fuse links can carry rated current up to an ambient of 40 °C. When the ambient temperature is higher than 40 °C de-rating may be required (a simple rule is to de-rate by 0,5 % per degree centigrade). The voltage rating is not dependent upon ambient temperature.
