[pjc50]

Fuses are just not that great. Quickblow fuses cannot keep up with quickblow MOSFETs. All they can do is limit the size of the fire in your enclosure.

[creer]

Specifically, fuses (I mean actual fuses) have specific specs and MOSFETS have different specific specs. There is nothing wrong with using fuses if you understand and pay attention to that spec. Indeed a "quickblow" fuse will not protect you from everything you can think of - just some things - just because it's "quickblow".