With the continuous improvement of various indicators of miniature circuit breakers in the industry, they have been widely used in many scenarios in the low-voltage electrical industry, and miniature circuit breakers are basically used in low-voltage distribution terminals; The miniature circuit breaker to achieve automatic and remote control, need to install a remote electric operation module, the product has the characteristics of small size, fast closing speed, reliable action, etc., using PIC single-chip microcomputer technology, with reliable delay and misoperation protection and other functions, product performance is reliable, long service life.

Molded case circuit breaker accessories mainly include two categories: internal accessories and external accessories. Among them, the internal accessories are used for the internal actuators of the circuit breaker to realize the remote, automated, intelligent control of the circuit breaker and the informatization and systematic management of the circuit breaker, which can be divided into undervoltage trippers, shunt trippers, auxiliary contacts and alarm contacts; The external accessory is used for the local manual operation of the circuit breaker to open and close, plug and replace or remotely control the circuit breaker to close, open and re-buckle the operation, so as to realize the remote control, automatic control and communication, intelligent development of the circuit breaker, which can be divided into electric operating mechanism, manual operating mechanism, plug-in and extraction device.

The accessories of the frame circuit breaker mainly include auxiliary contacts, shunt trippers, closed solenoids, undervoltage trippers and motors, so as to realize the remote, automated, intelligent control of the frame circuit breaker and the informatization and systematic management of the circuit breaker.