Molded case circuit breakers are also known as circuit breakers, all parts are sealed in the plastic shell,

 auxiliary contacts, undervoltage release and shunt release and more modular. As the structure is very compact, 

molded case circuit breakers can not repair. The multi-use manual operation, large-capacity optional electric separation.

 As the application of electronic over-current release, Molded Case circuit breaker can be divided into two categories

 A and B, B class has a good three sections of  protection, but because of price factors, the use of thermal magnetic 

release A market share of products higher.