MCB is an electrical circuit breaker equipment at an electric power system, which is able to open and close the electrical circuit in all conditions, including short circuit, according to the rating. Also on the normal stress condition or not normal. Miniature Circuit Breaker (MCB) in design with main functions to:
- Secure the cable against overload and short circuit current.
- Pass more current without heating.
- Open and close a circuit under rated current.