The present invention relates to a three-position disconnector switch, comprising:an earthing contact (1); a power out contact (2); a power in contact (3); and a piston (4). The power out contact comprises a first part (2a) and a second part (2b), and wherein the first part is connected to the second part by a leg portion (2c). In a first switch position an outer surface of a wall of the piston makes a direct electrical contact with the first part of the power out contact and makes a direct electrical contact with the power in contact. In a second switch position the outer surface of the wall of the piston makes a direct electrical contact with the first part of the power out contact and makes a direct electrical contact with the second part of the power out contact. In a third switch position the outer surface of wall of the piston makes a direct electrical contact with the second part of the power out contact and makes a direct electrical contact with the earthing contact. The piston is configured to move along an axis of the three-position disconnector switch to transition the three-position disconnector switch between the different switch positions