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Snap Action Limit Switches

Snap action limit switches are devices that are used in a wide variety of applications. These switches feature a spring-loaded snap action which produces a clicking sound when actuated. This feature makes them ideal for a variety of applications. This article will take a look at some of the more common applications and the working principles behind snap action limit switches.

Applications

Snap action limit switches can be found in many types of equipment ranging from simple to complex, manual to automated. Common applications include:

• HVAC controls
• Machine controls
• Home automation
• Industrial process controls
• Digital switching systems
• Medical equipment
• Grocery store checkouts

These switches can also be found in a variety of other applications including robotics, automotive, and security systems.

Working Principle

Snap action limit switches are constructed of two basic components: a contact switch and a spring-loaded plunger. When unlatched, the plunger is activated by an object or force, such as the closing of a door or the pull of a weight. The plunger then moves, making contact with the switch and creating a circuit. This circuit can then be used to activate a circuit breaker or to trigger a system alarm.

The main benefit of using a snap action limit switch is that it is able to sense changes in the environment quickly, due to its rapid response rate. This makes them suitable for a wide variety of applications where quick reaction time is critical.

Variations

Snap action limit switches can also be found in a variety of different configurations. Here are some of the common variations and their uses:

• Panel mounted switches – These switches are usually found on the dashboards of cars and machines. They provide a simple way to control various electrical components.
• Dimmable switches – These switches allow you to control the brightness of lighting fixtures.
• Control switches – These switches are used to control the operation of machinery and other equipment.
• Auxiliary switches – These switches are used for secondary operations such as activating lights or buzzers.

Conclusion

Snap action limit switches are extremely versatile and are used in a wide variety of applications. These switches are constructed with two basic components and feature a rapid response rate which makes them suitable for quick reactions. As well, these switches can be found in a variety of different configurations for different applications.