Zhejiang Shilong Electrical Technology Co., Ltd. is a professional company engaged in the development,production, sales and service of high and low voltage molded case circuit breaker. Molded case circuit breaker is designed to install contacts, arc extinguishing chamber, trigger and actuator in a plastic housing. As a rule, maintenance is not considered. It is suitable for the circuit breaker of the branch circuit. The overcurrent trigger has thermomagnetic properties. There are two types of thermomagnetic Molded case circuit breakers, the general thermomagnetic Molded case circuit breaker r, which is a non-selective circuit breaker with only two protection modes: overload long-term delay and short-circuit instant protection. Four protective functions time delay, non-delayed short circuit and ground circuit. Some new products of compact electronic circuit breakers also have a region selective locking function. Most Molded case circuit breakers are operated manually, some have motor drives.