83241200 Switches

Snap Action, Limit Switches

A snap action limit switch is an electromechanical device used to close or open a circuit as an object moves within a mechanical operation. It uses a sliding contact, or a plunger, to select a switch position as the object passes a given point. The influence of the object on the contact causes a spring-loaded mechanism to snap from one position to the other, and thus make the physical switch change. Typically, the plunger and contact are within a small housing and can be directly inserted into a mechanical device.

Applications of Snap Action Limit Switches

Snap action limit switches are used for a variety of devices and applications. These devices can control industrial machinery, safety interlocking circuits, door opening and closing, and many other applications. Companies can use snap action switches in order to accurately detect when a tool or a machine is starting, moving or stopping. Additionally, they are a cost-effective way to automate processes and produce uniform production.

Snap action switches offer the following advantages: they are reliable and require less maintenance; they are easy to adjust and reset; they have a wide range of settings and can be used with a variety of materials; they are also highly resistant to shock, vibration, and electrical noise.

Working Principle of Snap Action Limit Switches

The working principle of a snap action switch is simple. When an object, such as a door handle, a roller, or a cam, moves along its intended track, the contact spring-loaded mechanism which is the basis of the switch is activated. As the plunger or roller moves along its track, it causes a latch to close or open, creating a connection between the two contacts. This connection is then used to control the on/off state of a circuit.

When the plunger completes its track, the switch “snaps” back to its original position, providing an accurate and reliable way to measure the levels of motion within a device. The amount of force required to move the plunger, as well as its travel distance, can be adjusted depending on the application. Snap action switches usually have an adjustable sensitivity that allows them to be easily reset.

Conclusion

Snap action limit switches are an essential component of mechanical and electrical systems. They are a versatile and reliable device used to measure motion and trigger an electrical circuit. By providing an accurate, cost-effective, and easily adjustable switch to control a system, they allow companies to automate processes and help ensure consistent production.