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Rocker switches are a type of electrically operated switches that use a rocking motion to turn on and off a circuit. They are widely used in many commercial and industrial applications, including control panels, security systems, and machines. They usually have two electrical terminals and a push-button mechanism for operating the switch.

The most common type of rocker switch is a dual-pole-dual-throw (DPDT) switch. These are available in both miniature and heavy-duty sizes. They feature two separate poles, which can be connected together in different ways, allowing for a range of functions, such as on-off control, momentary operation, and single-pole switching. Rocker switches are available in a variety of mounting configurations, such as panel, surface, and PC board mount. They are also available with different actuators, including toggle, paddle, and rocker. Some rocker switches also feature illuminated actuation.

Rocker switches are commonly used in a wide range of industrial, commercial and residential applications. In the industrial sector, they can be found in control panels, machines, elevators and other industrial devices. In the commercial sector they are commonly used to switch electrical circuits on and off in stores and other public areas. Residential applications include kitchen appliances, lighting fixtures, and home entertainment systems.

The working principle of a rocker switch is simple. When the switch is in the on position, electrical current flows from one of the two terminals, through the switch, and to the other terminal. When the switch is in the off position, no current flows. The rocker switch is designed to be operated by physical force, usually by depressing the switch with a finger.

Rocker switches come in a range of features and configurations, depending on the function they are intended to perform. For example, some rocker switches are mechanically latching, meaning they stay in the "on" position until the user pushes the switch again, while others can be manually set to the “on” or “off” position. Rocker switches are also available with resistive elements that limit the amount of current flowing through them. This helps protect both the switch itself and the device being switched.

Rocker switches are a convenient, reliable, and cost-effective way to control devices and circuits. They offer a variety of features that can be customized to fit the application, including mounting configurations, actuation, and illuminated actuation. They are easy to operate and maintain, making them a reliable and cost-effective option for many control applications.

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