BZLN-LH3

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Snap action, limit switches are electronic components used in automation and industrial control systems to sense and report when a physical limit has been reached. The BZLN-LH3 is a popular limit switch designed for industrial control applications and which incorporates a number of features for improved performance. The following describes the application field and working principle of the BZLN-LH3.

Application Field

The BZLN-LH3 is designed for use in a wide range of industrial applications. It is suitable for a variety of switching commands and operations ranging from process automation in the chemical, petrochemical and food processing industries, to industrial conveyor belt and hoist controls.

This device is also commonly used to indicate when a machine has reached its maximum or minimum operating limits, and in complex control systems to ensure that movements are correctly carried out and within set parameters.

Working Principle

The BZLN-LH3 features a snap action actuator, which when actuated will cause a contact to break or close, dependent upon the model. The actuator is NOT powered and is activated via mechanical force to allow the unit to be used over long distances without the need for a power source.

This snap action switch has two mechanical contact points that act as changeover contacts, opening and closing during normal operation. When the actuator reaches its limit of travel, it forces the contacts to switch between open and close states.

This unit is also equipped with a mechanical-stop. As it reaches its maximum and minimum operating limits this feature ensures that the contacts return to the open state and that the system remains operational.

When the actuator is actuated, there is a distinct click that can be felt and heard. This tactile feedback helps users to remain aware of the switch state and confirm that the operation has been completed.

Conclusion

The BZLN-LH3 is a reliable, cost effective limit switch designed for a range of industrial automated applications. Its snap action actuator and mechanical-stop provide reliable and accurate performance, making it well suited for use in complex control systems.

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