A magnetic actuator with a movable part and a non-movable part is disclosed. The movable part can include two rotatable ferromagnetic elements with a portion close to the non-movable part to reduce magnetic force acting on the movable part during a switching operation, while moving the movable part towards the non-movable part. As the distance between the movable part and the non-movable part is reduced, a current through a coil of the non-movable part for generating magnetic force for acting on the movable part during a switching operation.