Abstract: Mining, ventilation, transportation and other aspects of mine need power supply system to ensure the safety and stability, the problems of low efficiency and poor controllability are still existing in the vacuum circuit breaker of mechanism structure and electric-magnetic structure. The controller of monostable permanent magnetic has been designed based on vacuum circuit breaker and Atmel micro controller, including signal measuring unit, IGBT driving circuit, executive circuit which improved the reliability of action to ensure the stable operation of the system.