I just got one of there, to nistall on the Valk, for the Faring radio, and power socket.

Some will say it's over kill, but I went with the bussman one the VTX, and I was not that happy.
Clear insulating cover with label recesses accept Small Format Labels
Cover Satisfies ABYC/USCG requirements for insulation
Tin-plated copper buses and fuse clips give 30 Amperes rating per circuit
Accepts ATO and ATC fast acting blade fuses
20 write-on circuit labels included
Tin-plated copper buses and fuse clips give 30 Amperes rating per circuit
Accepts ATO and ATC fast acting blade fuses
http://bluesea.com/category/5/21/productline/126