MCB Full Form Electrical | Full Form of MCB




MCB Full Form - Miniature Circuit Breaker

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 Miniature Circuit Breaker

Miniature Circuit Breaker

  • MCB abbreviated as Miniature circuit breaker, is an automatically operated electronics switch.
  • It detects the fault by detecting excessive amount of current flow within the circuit and breaks the circuit as soon as possible.
  • Initially, fuses were used instead of MCB.
  • Fuses need to be replaced after a short circuit while MCB just has got to be reset and it'll start functioning.
  • MCB offers greater operational safety and is convenient to use.

Working

  • MCB is designed to protect against over current and over heating faults.
  • When the current exceeds the predefined limit MCB automatically turns off and breaks the circuit.
  • To restart the circuit MCB has to be turned on manually.
  • In case of over heating MCB takes 2 seconds to 2 minutes to trip.

Features

  • Handling MCB is safer than fuse for electrical appliances as well as human beings.
  • In MCB, faulty wire trips off from original position which makes it considerably easier to detect faults.
  • It provides a far better interface by using a knob.
  • MCB is reusable and hence is cheaper then fuse.
  • It is more sensitive to current.
  • To return supply, you only need to push the knob.


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