What is the full form of MCB?

Answer 1

The definition of MCB is a miniature circuit breaker, it trips if there is a line to natural fault. Ill add some extra information about the different types.

RCD - residual current device = This is what you could separate you're circuits up with by inserting 1 of these in you're consumer unit (if you have lets say 10 circuits it goes like this...

rcd-mcb-mcb-mcb-mcb-mcb-rcd-mcb-mcb-mcb-mcb-mcb-main switch.

you see the rcd's control 5 circuits each, if 1 of these circuits had an earth fault on it, the rcd will trip and 5 of them circuits will go off, which means you have to keep tripping in you're rcd with an mcb 1 at a time to see which circuit the fault is on.

RCBO - residual current breaker with overload protection- These can be installed in place of mcb's and rcd's, the rcbo is an mcb and rcd in 1 breaker. For example, i have installed a consumer unit full of these, in this case if a circuit forms a fault then its only that circuit that goes off.

I hope this extra piece of information helps you along and best of luck.

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In electrical terminology MCB stands for Miniature Circuit Breaker.

Answer 2

MCB (Miniature Circuit Breaker) don't have melting wire.They don't have to be replaced everytime when they cut off.Hence MCBs are used in the place of fuse in homes and offices nowadays.

Answer 3

MCB's do the same function of a fuse, for protection against over current. The good thing is that you don't need to search for a new one when fuse burns out!!

Answer 4

Miniature Circuit Breaker. It helps to break electric circuit when there is short circuit in it.

Answer 5

MCB, Miniature Circuit Breaker is electric switch which is used to protect against short circuits

Answer 6

Miniature Circuit Breaker.