Circuit breaker and control device thereof

The invention relates to a circuit breaker and a control device thereof. The circuit breaker comprises a motor transmission mechanism, wherein the motor transmission mechanism is used for switching on/off a switch contact; the motor transmission mechanism comprises a worm, a first dual bevel gear, a second dual gear, a third dual gear and an incomplete gear; the first dual bevel gear is meshed with a gear arranged on a motor driving shaft; the first dual bevel gear is meshed with the second dual gear; the second dual gear is meshed with the third dual gear; the third dual gear is meshed with the incomplete gear; and the worm is fixed to the incomplete gear. Through adoption of the circuit breaker and the control device thereof, the switch-on/off reliability and stability of the circuit breaker can be considered. 本发明涉及种断路器及其控制装置。所述断路器包括电机传动机构，所述电机传动机构用于将开关触头闭合或者分离。该电机传动机构包括蜗杆、第双联斜齿轮、第二双联齿轮、第三双联齿轮和不完全齿轮；其中，所述第双联斜齿轮与设置在电机驱动轴上的齿轮啮合，所述第双联斜齿轮与所述第二双联齿轮啮合，所述第二双联齿轮与所述第三双联齿轮啮合，第三双联齿轮与所述不完全齿轮啮合；所述蜗杆固定在所述不完全齿轮上。本发明可以兼顾断路