Switch and changeover switch with compact structure

A switch comprising:

• a switch body for containing switch components;
• at least two terminal contacts protruding from the switch body;
• at least one movable contact movable from an operative position, wherein the movable contact is electrically coupled between the at least two terminal contacts, and a disconnecting position, wherein the movable contact is electrically uncoupled from the at least two terminal contacts;
• a moving mechanism including an electrical motor;
• a support sliding element for the movable contact driven by the moving mechanism and the electrical motor to move the movable contact between the operative position and the disconnecting position;
• the movable contact being a plate rod extended transversely with respect to the support sliding element, and
• a further third fixed terminal contact,
• wherein at least one terminal contact of the at least two terminal contacts is connected to a contact bar, the contact bar running on the perimeter of the switch body, and
• wherein two alternative connections are provided between the at least one terminal contact and a second of the at least two terminal contacts and between the at least one terminal contact and the third fixed terminal contact, respectively, depending on the position of the movable contact along the contact bar.