Plastic shell circuit breaker is a type of ordinary circuit breaker. The ordinary low-voltage circuit breakers currently used in the market are basically divided into two types: molded case circuit breakers and frame circuit breakers, which have their respective uses. The capacity of molded case circuit breakers is relatively small, generally below 1000A, and their volume is also small. In order to prevent arcs from flying out during disconnection, a plastic casing is used for sealing, which is generally used on electrical equipment circuits. The capacity of frame circuit breakers is relatively large, usually above 1000A, and there is no enclosed outer shell, so their volume is also large. They are generally used in power circuits. The basic principles of both are the same. In addition, ordinary circuit breakers also have oil immersed or insulated gas types, which are generally used in high-voltage circuits.
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