MCB and MCCB
Q1. Explain the term MCB.
Ans: An MCB is a type of circuit breaker that is used for low-voltage electrical systems, typically up to 1000V.
Q2. Explain the term MCCB.
Ans: MCCBs (Molded Case Circuit Breakers) are designed for higher voltage systems, typically ranging from 1000V to 6000V.
Q3. Write the types of MCCBs.
Ans: The six different types of MCBs are A, B, C, D, K, and Z.
Q4. How MCBs and MCCBs are different?
Ans: The difference between these is their working capacity such that MCBs are having just 125A but the MCCBs are having a current rating of up to 1600 A.
Difference Between MCB And MCCB
Miniature Circuit Breakers (MCB) and Moulded Case Circuit Breakers (MCCB), are the two main types of circuit breakers used in electrical distribution systems. Both MCB and MCCB are electrical protection devices that are used to prevent damage to electrical equipment and appliances from overcurrents, short circuits, and other electrical faults.
Since the early 20th century, circuit breakers have been used widely as a safety measure to prevent the overloading of electrical systems. With the advancement of technology increment circuit breakers have evolved and advanced, which is giving rise to the development of MCBs and MCCBs.