Ceramic fuses.

Fuses are fuses, they come in fast or time delay, they come in all manner of currents. Glass ones could shatter in some instances, while the ceramic ones will not. Look up the particular fuses you have access to, the maker should have a data sheet with time curves for each value. If they open at 7A plus the stated margin in a similar amount of time, they should be fine.

In other words they should carry 7A all day, and (and I am making up these numbers now) maybe half an hour at 8A and 2 minutes at 9A, etc.