MCB is the abbreviation for Miniature circuit breakers.

The MCB is an electromechanical device that switches off the circuit automatically if an abnormality is detected.

The MCB easily senses the overcurrent caused by the short circuit.

The miniature circuit has a very straightforward working principle.

The MCB has two contacts, one fixed and the other movable.

If the current increases, the movable contacts are disconnected from the fixed contacts, making the circuit open and disconnects them from the main supply.