Switch-disconnector control unit

摘要

The present invention relates to a switch-disconnector control unit comprising an electromagnet as an actuator including a moving control arm, and a spring actuator including a control shaft. The control arm is controlled by an armature of the actuator and connected to the control shaft. Said control shaft is arranged to control the contacts of the switch-disconnector using the spring actuator. The control arm comprises a connection element, which is jointedly connected through a control element to the control shaft and the actuator. An articulated joint at the end of said connection element is formed of an oval opening and a pin. Said opening is shaped as an ellipse in the longitudinal direction of the connection element, and is dimensioned to form a clearance in the joint between the connection element and the control arm of the actuator.