The blasting circuit breaker and the studied self - extinguishing circuit breaker that are in the same voltage level are compared . it proves that the arc energy can be used to help build the pressure of the expansion chamber and extinguishing the arc in order to lessen the driven energy 并且对同等级下压气式断路器和自能式断路器进行了比较,表明本文所研究的自能式断路器是可以利用电弧能量熄灭电弧本身达到减小操作功的目的。