Un accionador operado por resorte para un aparato de conmutación eléctrica

摘要

The invention relates to a spring operated actuator for an electrical switching apparatus. It has an opening spring means and a closing spring means, at least one of them including a torsion spring (3, 4). According to the invention the torsion spring (3, 4) is charged in the unwinding direction and discharged in the winding direction.