Give reasons as to why miniature circuit breakers give better protection than fuses
Answers
Answer:
MCB is more sensitive to current than fuse. It detects any abnormality in the current flow and automatically switches off the electrical circuit.
In case of MCB, the faulty zone of electrical circuit can be easily identified. Faulty circuit trips to the off position. On the other hand in case of fuse, the complete fuse wire needs to be checked by opening fuse grip for confirming the faulty zone.
With MCB it is very simple to resume to the supply. You just need to push the knob of MCB back to on position. But in case of fuse, the entire fuse wire needs to be replaced.
MCB provides a better interface with the help of knob than a fuse. In case of fuse the compete handle needs to be taken care out.
Handling MCB is electrically safer than handling a fuse.
MCB is reusable and hence has less maintenance and replacement cost. Whereas a fuse needs to be replaced whenever it goes faulty
Answer:
it gives more protection than fuse because in some cases the fuse is unable to know high voltage which causes destruction to other circuit but miniature circuit breaks faster than fuse and gives a long term protection if overload ocurres then our circuit is saved