Not to be a harbinger of all things negative............well, probably am come to think of it!! LOL Did you read my sarcastic comment about HD's and breakers?? The likelyhood of blowing a fuse at any time is rare, 'cept maybe after you have just worked on the bike, so a cct breaker is really of dubious benefit. Plus whatever tripped the breaker will still have to be found before it is reset, so no no real benefit over a fuse.
Breakers do offer the possible advantage of lower volt drop (which in reality is very minor) on lower volt applications if the contacts are in excellent condition, compared to the restriction of the fuse wire, though this would be lost over time/trips. Simple fuse maintenance/replacement every now and then will all but remove problems with fuses.
There is also the higher rupturing capacity of fuses over breakers. In effect, fuses offer better protection of the circuit under high amp faults, as they interrupt the circuit faster than a breaker can, plus open it completely. Breakers can, and have, welded together the contacts in those situations, and can't open the contacts faster than a fuse can blow.
Not to say I don't like breakers, but not in low volt situations like a vehicle. Save your money and either upgrade to blade fuses, or get a packet of spare fuses to suit.
BTW, breakers still need maintenance to make sure the mechanism's don't seize, which they can, and you had better hope they still trip at the rated current.........something you can be sure of with a fuse.
Bill...................;-)
