I heard that circuit breakers are not a good idea. Is it tru that they lose their capacity every time they are tripped. So the first time it will trip at rated load, then it will begin to trip at lower values every time it is tripped?

I have had problems with them throwing easier when they get hot when mounted under the hood

Same thing with what happens to home breakers. The more you trip them, the less likely you'll be able to tripping in the future.

Fuses are cheap and rarely do they fuse in the open current position. If your breaker did that, you have a good chance at starting a fire or blowing up your equipment.

i use them... i have no problems....

i did at first.. i did not have enough power behind it and she started to pop.. i added more cells.. and no more problem.