A spring mechanical control for high or medium voltage circuit breaker, comprising a wheel toothed cooperating with a pinion

摘要

The mechanical control to a spring for high or medium voltage circuit breaker comprises a toothed wheel (2) driven in rotation by a spring from a first angular position towards a second angular position and a pinion (3) cooperating with the toothed wheel to move it from the second angular position towards the first angular position in order to tension the spring, this toothed wheel has a peripheral toothing comprising retractable teeth. The retractable teeth are arranged on a retractable segment (10) of the peripheral toothing. With this arrangement, a single sliding system is necessary for the assembly of the retractable segment, which improves the reliability of operation and makes it possible to reduce the cost price of the control.