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Rocker switches, known commonly as toggle switches, are a type of electrical switch consisting of a rocker base, a spring, and an actuator. The rocker base provides an electrical connection between two electrical contacts, the spring provides a mechanical connection between the actuator and the rocker base, and the actuator is the lever that is operated by the user to make the electrical connection. Rocker switches have a range of applications in the electronics industry, including automotive, consumer electronics, medical, and telecommunications. They are also commonly used in a variety of industrial applications.

In the automotive industry, rocker switches are used to control power windows and other power accessories, as well as to provide turn signals and warning lights. In consumer electronics, rocker switches are used in a wide variety of products, including television sets, DVD players, and home theater systems. In the medical field, rocker switches are used to control medical devices such as infusion pumps and respirators. In telecommunications, rocker switches are used to activate and control certain features of telephone systems.

The working principle of a rocker switch is based on its two contact points, either open or closed. When the actuator is pressed down, the two contact points are closed, making the circuit and completing the circuit. By releasing the actuator, the two contact points open, breaking the circuit and removing power from the system. The size and shape of the rocker switch depend on the specific application.

Rocker switches are available in a range of different colors and shapes, and a variety of different mounting styles. They can be mounted in a variety of ways and can be surface, screw, or panel mounted. They can also be integrated into other components of a system, such as a circuit board, or used as a stand-alone input control device. The selection of a suitable rocker switch depends on the specific application, as the size and shape of the switch must be compatible with the device in question.

Rocker switches are available in both single and double pole configurations, with the single pole switches controlling one circuit, while the double pole switches controlling two circuits. The two poles in a double pole rocker switch are known as common, or "hot" contacts, while the third pole is known as the "neutral" contact, and is used to complete the circuit. Some rocker switches also have features that allow the user to control the speed and intensity of the operation, such as a speed control switch.

Rocker switches are relatively simple and cost-effective solutions for controlling electrical circuits. They are a reliable and durable switch, which is why they have been used for so many years in a variety of industries. By understanding the various types and applications of rocker switches, designers can ensure that the best switch for the application is chosen.