Installing the necessary safety precautions and following protocol is crucial while dealing with electric circuits. Utilising self-operating electrical switches is one such safety measure. They are very good at shielding electrical appliances from explosions, which helps to avoid mishaps. These switches, known as miniature circuit breakers, MCB, and moulded case circuit breakers, MCCB, are utilised extensively in every area. However, despite having many similarities in their operations, they differ in a few ways.