MCCBs are made up of two main components: the breaker frame and the trip unit. The breaker frame is the outer shell of the breaker, and it houses the trip unit. The trip unit is the internal mechanism that trips the breaker when an overload or short circuit occurs. The trip unit contains the current sensing elements, such as thermal-magnetic or electronic trip units, and it also contains the contacts that open and close the circuit.

MCCBs are designed to provide reliable protection against overloads and short circuits. The current sensing elements detect when the current in the circuit exceeds the rated value, and the contacts open the circuit to prevent damage. MCCBs are also designed to provide easy maintenance, as they can be easily replaced if they become damaged or worn out.

MCCBs are available in a variety of sizes and ratings. The size of the breaker is determined by the amount of current it can handle, and the rating is determined by the amount of voltage it can handle. The size and rating of the breaker will depend on the application and the amount of current that needs to be protected.

MCCBs are designed to be reliable and easy to maintain. They are also designed to be energy efficient, as they can reduce energy consumption by preventing overloads and short circuits. MCCBs are also designed to be cost-effective, as they can save money on energy costs by preventing damage to electrical circuits.

MCCBs are a reliable and cost-effective way to protect electrical circuits from overloads and short circuits. They are available in a variety of sizes and ratings, and they are designed to provide reliable protection and easy maintenance. MCCBs are a great choice for industrial and commercial applications, and they can help reduce energy costs by preventing damage to electrical circuits.