Electrical Miniature Circuit Breaker Diagram

Nowadays we use an mcb in a low voltage electrical network instead of a fuse.

Electrical miniature circuit breaker diagram. A miniature circuit breaker mcb is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. The miniature circuit breaker mcb plays an important role in providing overcurrent protection and a disconnect means in electrical networks. A miniature circuit breaker mcb automatically switches off the electrical circuit during an abnormal condition of the network means in overload condition as well as faulty condition.

What is miniature circuit breaker mcb. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit its basic function is to interrupt current flow after a fault is detected. Mcbs are typically rated up to a current up to 125 a do not have adjustable trip characteristics and can be thermal or thermal magnetic in operation. A miniature circuit breaker mcb is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit mcbs are typically rated up to a current up to 125 a do not have adjustable trip characteristics and can be thermal or thermal magnetic in operation.