The Difference Between a Molded Case Circuit Breaker And a Miniature Circuit Breaker

Miniature circuit breakers and molded case circuit breakers are both electrical protection equipment, but they have some obvious differences .

•  Definition and application of miniature circuit breakers miniature circuit breakers are commonly used for short-circuit protection and overload protection of low-voltage lines. The utility model has the advantages of simple operation, compact structure, convenient installation and relatively low price, etc. .

•  Definition and application of plastic shell circuit breaker plastic shell circuit breaker is also a kind of low-voltage line short-circuit protection and overload protection device. Compared with the small circuit breaker, its structure is more solid, better sealing, to prevent dust, moisture and other external environment pollution and erosion. As a result, it is commonly used in harsh environments.

•  In general, although both miniature circuit breakers and molded case circuit breakers are common low voltage line protection devices, their application ranges are different. Small circuit breakers are more flexible and less expensive, and are widely used in household, commercial and industrial facilities, while molded case circuit breakers are more reliable and suitable for harsh environments, such as underground doors, mining equipment.