MCCB stands for ‘Moulded Case Circuit Breaker’. It is a heavy duty circuit breaker equipped with a tripping coil and can give a signal. The thermal and magnetic elements, adjustable over a wide band, make these MCCB’s ideal for safety and protection of industrial machines and can be installed in Special MCCB DBs. The operating current range of MCCB varies from 16 Amps to 630 Amps. It is mainly used in commercial and industrial applications and in residences it is used at the mains end.