Semiconductor fuses are fuses that have been specifically designed to protectsemiconductor devices. They are often also referred to as solid state fuses,rectifier fuses or ultra-rapid fuses. Semiconductor devices are extremelysensitive to current fluctuations and require special protection. To perfo
CAN I USE AN AC RATED FUSE IN A DC APPLICATION? Direct currents are very difficult to stop or interrupt when compared toalternating currents. Alternating current sources reverse the flow of currentmany times a second (in some locations 100 times a second on 50 Hzsystems)
IS THE BREAKING CAPACITY IMPORTANT?Yes, very important! A fuse must be able to open the circuit during a shortcircuit without losing physical integrity. In other words, it should be ableto exist under a maximum fault level load without physically cracking ordisintegrating.
Circuit breakers have the advantage of being resettable and operationallycheaper and they have certainly taken over the downstream protectiverole where the potential fault currents are lower. So if you have a fuse ina downstream role, then in some cases, YES you can replace it with a circuit breaker.