5. What is MCB? How it is used?
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A Miniature Circuit Breaker (MCB) is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit.
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MCB or Miniature Circuit Breaker is an electromechanical device that protects an electric circuit from an overcurrent. ... In short, MCB is a device for overload and short circuit protection. They are used in residential & commercial areas.
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