Different Electrical Switches May 14, 2019 The Different Types of Electrical Switches. Electrical switches are devices that are designed to interrupt the flow of electrons in a given circuit. Their most basic function is to control the power advice4all.altervista.org Residential Wiring GuideStart Stop RelayElectric Dryer OutletHow To Wire Central Heating Controls10 2 Wire With Ground3 Volt Coil RelayAstra Power Steering Pump Wiring DiagramVolt Free Contact Diagram