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Snap Action, Limit Switches

Snap action and limit switches are contacts that are used to control circuit functions by opening and closing a set of contacts when a predetermined operating force is reached. This operational force is usually generated by mechanical movement such as plunger, roller, lever or another type of actuator. Snap action switches provide a switching action that is both fast and reliable under most conditions.

The snap action switching principle has been around for many years, but it was not until the advent of integrated circuit technology and increased demand for better and faster electronic controls that snap action and limit switches gained popularity. The basic operation of snap action and limit switches is the same, but they differ in the way they are triggered. Snap action switches are actuated by a preset amount of force while limit switches are triggered by a physical action such as a hinge or lever.

Snap action and limit switches are manufactured to meet a wide range of application requirements. They are available in a variety of materials, sizes and configurations to suit different applications. Some of the most commonly used snap action and limit switches include momentary contact, soft-actuated, latching and thermostat switches.

Momentary contact switches are designed to make an electrical contact when an operating force is applied, and then return to an open state when the force is removed. Soft-actuated switches use low operating forces to trigger the contacts. This is achieved by using soft rubber materials to reduce the weight of the actuating force.

Latching switches remain in a set position when actuated and require the operating force to be removed before the contact closes. There are also thermostat switches which close the contacts when the temperature reaches a predetermined level.

Snap action and limit switches are used in a variety of industries ranging from automotive and industrial to consumer and commercial. They are used to regulate the flow of electricity in a number of applications such as electronic relays, motor controllers and security systems.

Snap action and limit switches are ideal for applications that require both fast and reliable switching. They are relatively simple to operate and can be very cost effective. In addition, they are easy to maintain and require minimal adjustment over time.

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