Fuse Box VS. Circuit Breaker: What’s The Difference Sep 23, 2016Fuse Box. A fuse box prevents circuit overload using small fuses that screw into the electrical panel. If there’s a power surge or the electrical current in a circuit becomes too strong, the fuse will blow and cut off the power supply to that circuit, just like a circuit breaker. Buzz Electrical Fuse Box vs Circuit Breaker: What Is the Dec 20, 2018Fuse Box vs Circuit Breaker: What Is the Difference? December 20, 2018. If you are a first time home buyer, or if you haven’t ever looked closely at your electrical panel, you might assume that all panels are pretty much the same.