83123018

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Snap action, limit switches can be defined as switches in which a spring-loaded actuator snaps into contact with either upward or downward movement and hold the contact steady until the actuator is manually reset or released. These switches have a wide range of applications and can be found in numerous industries such as automotive, medical, aviation and industrial automation. With a variety of models and designs to choose from, snap action limit switches are extremely versatile and dependable components commonly used in many electronic applications to detect the position and motion of target objects.

83123018 Application Field and Working Principle

Snap action limit switches are often used to detect the presence, absence and position of target objects, including humans and objects. They work by sensing the object\'s position and motion through an actuator that moves into contact with it, triggering an electric signal which is then interpreted by the electronic device. They are essential for automated systems, providing an accurate, reliable, and safe way to sense the position and motion of objects.

Snap action limit switches are used in a wide variety of applications, such as door stops and other position dependent contacts, level, flow, pressure and temperature measurement and control, and sprinkler system on/off. Furthermore, they are used in the automotive industry to detect the position of automobile moveable parts such as brake pedal and accelerator pedal, and to detect the speed of the car. Other popular industrial applications of snap action limit switches include elevator limits, lawn mower deck engagement, trash compaction, and dispenser door opening.

The working principle of a snap action limit switch is relatively simple. It typically consists of a plunger, diaphragm or lever that is attached to a contact-holding spring. When a force is applied to the actuator, the spring pushes the actuator into the switch body and comes into contact with the target object, causing the contact to change from open to closed (or closed to open). The contact-holding spring ensures that once the contact changes, it remains in that position until manually reset or released.

Snap action limit switches are highly reliable switching components and are one of the most important and commonly used sensing devices in automatic systems. With a variety of models and designs to choose from, they offer a cost-effective solution for controlling the movement and position of various objects.

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