I'd be more inclined to use a small car interior light bulb like what ElectroVoice and other companies used inside of some of their cabinets. I had some Interface C's at one point and they used them in there plus many, many car audio companies use the bulbs in their passive crossover networks for dissipating any "overage" of current to save doing a lot of Return Authorizations for blown tweeters. They've always worked well and my Lightning Audio components use them, too. (as did many Rockford components) Just my $.02.
http://www.parts-express.com/pe/showdetl.cfm?partnumber=260-231
My Norman Lab Model 9's used two manual reset circuit breakers in them but I completely bypassed them because they were a) tripping quite early, b) didn't make good connection and the sound would just quit at even low volume and, c) I could tell a major difference in the mids and highs once they were removed. To replace them was $10 each and I didn't care to do that. The only reason they were there was to keep customers from killing their drivers if they were under (or over) powering them.