Switches are fundamental devices in electrical systems, used to control the flow of current by opening (disconnecting) or closing (connecting) a circuit. They come in various forms, including toggle, push-button, rocker, and slide switches, each suited to different applications depending on the desired control mechanism and functionality.

In household settings, light switches control power to fixtures, while in electronics, switches activate devices or functions within a circuit. Industrial and commercial applications often utilize heavy-duty switches designed to handle larger currents and provide reliable performance in demanding environments. Switches ensure the safe and efficient operation of electrical systems, making them a critical component in both simple and complex applications.