Switch

A switch comprising a pole board having stationary contacts;

• and
• a moving board including a moving contact made slidable to the stationary contacts and made movable with respect to the pole board, whereby the switch detects the shift position of an automatic transmission with the moving contact and the stationary contacts, wherein:
• the pole board is provided with insulator portions of an insulator having sliding faces on their surfaces which are so protruded from the pole board as to correspond to ON/OFF switching positions for providing contact/non-contact boundaries of sliding motions of the moving contact with respect to the stationary contacts;
• the insulator portions are provided in their sliding faces with recesses which correspond to the OFF positions of the moving contact for reducing facial pressures;
• and
• when the moving contact slides with respect to the stationary contacts to the ON/OFF switching positions of the stationary contacts, the moving contact starts to ride on the sliding faces of the insulator portions so that the moving contact goes out of contact with the stationary contacts and can move from the sliding faces into the recesses, and when the moving contact goes down the sliding faces of the insulator portions, the moving contact contacts with the ON/OFF switching positions of the stationary contact.