MPO4D RTP SLOT In the simplest case, a switch has two conductive pieces, often metal, called contacts, connected to an external circuit, that touch to complete (make) the circuit, and separate to open (break) the circuit. A switch with both types of contact is called a changeover switch or double-throw switch. A regular on-off switch (such as on a flashlight) has a constant on-off feature. The parts may be mounted on an insulating base with terminals for wiring, or may be directly bolted to an insulated switch board in a large assembly.|2024 Liga 1 (Indonesia)