Question

State one advantage of MCB

Answer 1

An advantage of MCB:
1. It avoids the inconvenience of connecting a new fuse wire
2. It is much safer than fuse due to its quick response.

Answer 2

MCB has several advantages over fuse:

1. MCB is more sensitive to current than fuse. It detects any abnormality in the current flow and automatically switch off the electric current.
2. 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.
3. 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.
4. MCB provides a better interface with the help of knob than fuse. In case of fuse the complete handle needs to be taken care out.
5. Handling MCB is electrically safer than a fuse.
6. MCB is reusable and hence has less maintenance and replacement cost. Whereas a fuse needs to be replaced whenever it goes faulty.


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