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Snap Action, Limit Switches are electromechanical devices that typically consist of a metal housing with an actuator. The actuator is a metal or plastic knob, lever, roller, or plunger that moves when the device is activated. Inside the metal housing, two components work together to control the device. The first is a metal contact that slides along a resistive elements. The metal contact is held in place by a spring onto which an electrically insulated wire is attached. When the metal contact is touched by the actuator, it closes the connection between the resistive element and the insulated wire, thus triggering the device to activate.

Snap Action, Limit Switches are most commonly used in industrial applications for detecting the on/off position of machinery and other devices. They are also used in safety and security systems to detect the presence of people or objects in an area. In addition, they can be used to control the flow of electricity, such as in a switch box.

The working principle of Snap Action, Limit Switches is relatively simple. When the actuator is pressed down, it depresses a metal contact at one end of the switch body and applies pressure to a coiled spring attached to the other end of the switch body. This pressure causes the metal contact to move, closing the connection between the resistive element and the insulated wire and triggering the switch. When the actuator is released, the coiled spring pushes the metal contact open again, breaking the connection and deactivating the switch.

The design of Snap Action, Limit Switches is relatively simple and reliable, making them ideal for a variety of applications. However, they can be slow to respond and require manual resetting when the switch is triggered. In addition, the components inside the switch body can be susceptible to moisture and dirt, so they must be kept clean and dry if they are to function properly.

Snap Action, Limit Switches are available in a variety of shapes, sizes, and materials to suit different applications. They are typically actuated by a mechanical switch, but some models are also available with a built-in electrical contact. Some switches also feature adjustable time delays and adjustable trip points, allowing them to be used in a wide range of applications.

Snap Action, Limit Switches are relatively inexpensive and easy to install, making them a popular choice for many applications. They are reliable and easy to use, and can be used in a variety of applications, from detecting the on/off position of machinery to controlling the flow of electricity. Despite their simple design and working principle, they are capable of providing reliable operation in a wide range of environments.

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