Medium voltage circuit breaker arrangement operated by a transmission mechanism

A circuit breaker arrangement comprising:

• at least one pole part configured to switch an electrical medium to high voltage circuit by a respective pair of a fixed electrical contact and a movable electrical contact;
• at least one pushrod configured to move a corresponding movable electrical contact of the at least one of pole part, respectively;
• a common actuator unit configured to operate each pushrod;
• and
• a transmission means for transferring a switching force from the actuator unit to each pushrod, the transmission means mechanically connecting the actuator unit to each pushrod,
• wherein the transmission means includes a crankshaft having at least one crank and at least one connection rod, the at least one crank being pivotally attached to a first end of a corresponding one of the at least one connection rod,
• wherein a second end of the corresponding one of the at least one connection rod opposite to the first end is pivotally attached to an end of a corresponding one of the at least one pushrod of a corresponding one of the at least one pole part to move the corresponding pushrod.