What is a three phase line In electrical engineering three phase electric power systems have at least three conductors carrying alternating current voltages that are offset in time by one third of the period. A three phase system may be arranged in delta ? or star Y also denoted as way in some areas.what is the difference between single phase and three phase? single phase requires the single wire to connect the circuit whereas 3 phase needs 3 wires. The voltage of the single phase is 230v whereas three phase voltage is 415v. The loss in single phase is maximum whereas in three phase is minimum. The single phase efficiency is less whereas in three phase is high.
what is MCCB circuit breaker
A moulded case circuit breaker MCCB is a type of electrical protection device that is used to protect the electrical circuit from excessive current, which can cause overload or short circuit.
where is MCCB used
MCCB stands for Molded Case Circuit Breaker. It is another type of electrical protection device which is used when load current exceeds the limit of a miniature circuit breaker. The MCCB provides protection against overload short circuit faults and is also used for switching the circuits.

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