MCB box serves as regulating agents when there is an exceptional supply of power. As soon as it notices an overload or power spike, this mechanism shuts down the electrical system. It is typically used in place of a fuse. In contemporary societies, every apartment has this offering which is a distribution box that is fixed or available. A Meter Room exists in every civilization. Every apartment in the building receives its own electricity through boxes and switches in this metre room. The MCB box, which is mounted in every apartment, receives the electricity through wires and cables that run from the metre room.