[Vikesrock]

Originally Posted by J-Mech

Well the fuse would protect against a device failure. So it would make a difference by protecting the router.
http://en.wikipedia.org/wiki/Fuse_(electrical)

To draw enough current to blow a fuse there would already have to be some sort of failure in the router. While a fuse may prevent further failures from occurring, the router does not have any components that are user serviceable for most teams so the extent of the failure is not really relevant. Fuses are meant to prevent further failures and fires, they do not prevent the initial failure.

Also, odds are that there are one or more fuses already contained in the router to prevent a fire in the case of a failure resulting in over-current.

EDIT: The link you posted actually does a pretty good job of describing what a fuse does and doesn't do.