Fuses are amperage load rated,regardless of what type unit it is in whether a Helix or a Cobra CB radio makes no difference.
When amperage load is exceeded the fuse element melts and cuts all power into the unit preventing overload damage to the unit.
Useing Surge protectors upstream from the Helix will prevent such things for you in the future.
Building code standards require breaker style outlets in bathrooms and kitchens that are next to water sources.
Their simple to install and arent as bulky as the strip style units used for computers etc.Battery A/C power back up is needed when D/C surges accure.
As with "any" fused unit a spare fuse is always a handy item to have around.

M/

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