An electric switch comprising a frame (2), a first stationary contact (41) stationarily fixed to the frame (2), a contact support element (6) adapted to move relative to the frame (2) between a first position and second position, a movable contact (8) stationarily fixed relative to the contact support element (6) and having a longitudinal direction, a first arc shutter (91), and an actuation system for moving and guiding the first arc shutter (91) during an opening event. The actuation system comprises a first actuator member (711) stationarily fixed relative to the frame (2), and a second actuator member (721) stationarily fixed relative to the first arc shutter (91). The first arc shutter (91) is adapted to move in an outward direction during the opening event, wherein the outward direction is parallel to the longitudinal direction of the movable contact (8).