Any circuit needs to be protected from power surges and high-voltages to function without unnecessary power cuts and short circuits. Low voltage circuits, especially, are susceptible to such power surges as they burn out quicker than the high voltage circuits. A traditional solution for countering these power surges was the fuse, which breaks the circuit in a power surge. However, the problem with conventional fuses is that they have to be replaced every time there is a power surge, making them ineffective and expensive.
Notable advantages of MCB
MCBs have various advantages that make them a superior circuit breaking device than the fuses. Firstly, the MCBs are highly sensitive to power fluctuations and go off even if a slight abnormality is detected in the power flow. Second, it is easy to resume the power supply in case of a power trip by merely turning the switch to the “on” position. The next significant advantage of MCB’s is that they are highly reusable, eliminating the need to change them after every power surge. All the above benefits make the MCB an inexpensive circuit breaker for its reusability.
Three types of MCBs
Based on their load capacity, three main types of MCBs exist: Type B, Type C, and Type D. The Type B breaker is designed to withstand power surges up to five times its maximum capacity. Type C breakers are designed to withstand up to ten times its maximum load capacity, and the Type D breakers can withstand up to twenty-five times the maximum load capacity. Type B breakers are used for residential purposes, whereas the Type C and Type D breakers are more suited for commercial and industrial purposes
Selecting the MCB
There are a couple of essential steps needed to be taken before installing an MCB. The first most crucial step is to check the power consumption of the device in which the MCB is being installed. All MCBs come with a cap voltage of up to 125 volts. Hence, the appropriate choice needs to be made. The next crucial consideration is the current type of the component. The MCBs are available for both Direct Current (DC) and Alternating Current (AC ) devices. Finally, additional features like reset types, radiation levels, or corrosion levels, must be analyzed before making the correct choice.
Categories Simillar to Miniature Circuit Breakers includes Thermal Circuit Breakers