The answer to 'which is better circuit breaker or fuse' is that circuit breakers are generally considered better than fuses for most residential electrical systems. Circuit breakers can be reset and reused, while fuses need to be replaced each time they blow. Circuit breakers also provide more flexibility and control, allowing you to easily turn the power on and off for specific circuits in your home.
However, fuses can be a more cost-effective option for some applications, and they may be required in certain older electrical systems. The best choice will depend on your specific needs and the configuration of your home's electrical wiring.