A spring gauge can be used to measure the spring pressure. Adjustment is made by bending the Breaker-lever spring.
弹簧计用来检测弹簧压力，可弯曲断电器臂弹簧进行调整。
2
For vacuum circuit breaker with spring operating mechanism, an optimum design of CAM mechanism is significant to make the output force characteristics match the load characteristics.
The utility model relates to an operating mechanism for a breaker, which is composed of a main shaft, a torsion spring, a rotating disk, a worm wheel, a worm screw, a motor and a supporter.