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Snap Action Switches

Snap action switches can be used for a variety of applications including controlling the flow of electricity and actuating other mechanisms or variably controlling the power supply. Generally, snap action switches are two state, switchable off and on, devices.

Working Principle

Snap action switches can be manual, automatically reset, and even motorized. The manual type requires the user to physically turn the switch on and off. Automatically reset switches can detect and reset the switch position by itself. Motorized snap action switches use a motor to control the switch position.

The underlying principle of snap action switches is the mechanical snap action. This process entails an object, such as a lever, pivoting when pushed far enough in one direction and snapping with a mechanical movement back into its original position. This motion is piloted by a coil spring or lever that allows the switch to “snap” into the desired position on contact.

Applications

Snap action switches are widely used in many different types of applications and settings. The most common uses for snap action switches are in home appliances, safety and security systems, machine control, and industrial automation settings.

The standard snap action switch is most often used for indicating the opening or closing of an electrical circuit. This can be used for many home and commercial applications, such as warning lights, alarms, and equipment shutdown systems.

Snap action switches are also widely used in the industrial setting for process automation and control. For example, some snap action switches are designed to be triggered by a physical force such as pressure and then actuate to send the information to the control system. This type of switch is often used in conveyor systems, filling systems, and packaging machines.

Conclusion

Snap action switches are devices that are able to detect an input action, such as pressure or force, and then actuate an output such as closing or opening an electrical circuit. The underlying principle of snap action switches is the mechanical snap action – a pivoting motion caused by a spring or lever. Snap action switches are used in a variety of applications, ranging from consumer appliances to industrial process automation.