D2SW-3L2DS

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Snap action, limit switches are a type of mechanical switching device which actuates when a predetermined contact pressure is applied to the switch contact or when a specific travel distance is reached. The switch is triggered by a mechanical movement rather than electricity. The D2SW-3L2DS is a double acting, self-resetting switch which features two stainless-steel flat contacts which ability to multiple million actuation cycles. It is a cost effective solution that is widely used in many different applications.

Application Field

The D2SW-3L2DS is used in a variety of applications, such as mechanical monitoring, automatic machine tools and industrial controllers. Its self-resetting feature makes it particularly suitable for use in critical applications where continuous operation is required and switch failure could have potentially disastrous consequences. It is also used in the production of food, beverage and pharmaceutical products as a reliable device for monitoring and control.

Working Principle

The D2SW-3L2DS employs a snap-action mechanism which seizes a trip lever when actuation pressure or switch travel distance is reached. The functioning of the switch is independent of any external motion source and is controlled by the external force applied to the contact. The trip lever activates the switch when the external force is exerted, and the switch will reset itself when the force is removed. This positive action ensures that the switch is always operating correctly and does not depend on any external motive force toprevent failure.

The D2SW-3L2DS design includes four spring elements, two of which are situated between the contact arms and the switch body, while the other two are positioned between the contact arms themselves. The springs keep the contact arms in an open position, while the external force, or switch travel, causes the contact arms to snap shut. The snap-action ensures a precise and repeatable operation, which is ideal for precise machine control.

The contact force is rigorously tested to ensure reliable operation up to 2.9N, which is much higher than the resistance forces of the spring-loaded contact arms. This ensures that the contact arms will move rapidly when triggered and will not be overly influenced by external vibrations or other forces, providing a consistent and reliable operation over time.

Conclusion

The D2SW-3L2DS is a mechanically operated snap action, limit switch that offers a highly reliable and cost-effective mechanism for monitoring and control of industrial machinery and other systems. With its self-resetting feature and high contact force, the device is an ideal solution for many different applications where precision and durability are required.

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