Intelligent controller of frame circuit breaker

The utility model relates to an intelligent controller of a frame circuit breaker, which has high reliability and safety and comprises a microcontroller, a current signal conditioning module connected with the microcontroller, a voltage signal conditioning module, a transformer break line detecting module, a frequency detecting module, a keyboard and display module, an execution mechanism driving module and a relay output module, wherein the current signal conditioning module and the voltage signal conditioning module are respectively connected with the output ends of a current transformer and a voltage transformer. The utility module largely uses a numerical method to realize the functions realized by hardware in like products, thereby greatly simplifying circuit hardware, reducing the quantity of devices, improving system reliability and reducing production cost. In the aspect of power supply circuit design, the utility model adopts a DC/DC voltage-stabilizing circuit with a hystersis property, thereby obvi