Advantages and disadvantages of MCB

MCB stands for miniature circuit breaker, it is an electromechanical device which protects an electrical circuit from short circuit, faulty design, and overload which may lead to overcurrent. MCB is a better alternative to a fuse as it has more advantages over the later one. The disadvantages of fuses are that when they have operated they must be replaced. An MCB has overcome this problem since it is an automatic switch which opens in the event of an excessive current flow circuit in the circuit and can be closed when the circuit returns to normal.  Let us have a deep insight into the pros and cons of the Miniature circuit breaker to know more about it. 

Advantages of MCBs:

  • MCBs have more sensitive to current then fuse. 
  • It has quick work against short circuit.
  • It works quickly on overloading and under voltage.
  • It is reusable hence less maintenance cost and less replacement cost.
  • It is very simple to resume the supply.
  • Can be easily used circuit control switch when needed.
  • Handling MCB is electricity safer than handling fuse, in case of MCB.
  • It has reliable.
  • MCB provides a better interface.
  • MCB performance immediate indication of faculty circuit.
  • The performance of MCB is good in case of earth leakage.
  • In the case of surge current, The MCB has time delay characteristics, therefore, it works properly.
  • Shorter tripping time under moderate over current than with fuses.
  • When the use of MCB, faulty zone of the electrical circuit can be easily identified.

Disadvantages of MCBs:

  • The cost of the MCB is greater than the fuse.
  • The cost of the MCB distribution board is greater than rewireable fuse board.
  • The risk of overloading of the circuit due to unqualified of the person operating than completing removed.

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