WLCL-LDK43-N

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Snap action, limit switches are a type of switching device that open or close as a result of an external pressure or physical force. The WLCL-LDK43-N is a general-purpose snap action, limit switch suitable for a variety of applications.

Application Field

WLCL-LDK43-N snap action, limit switch is suitable for use in applications such as security systems, fire alarm systems, process control systems, and applications involving household appliances, office equipment, machine tools, and so on. This switch is especially suitable for installations requiring a high shock and vibration resistance.

Working Principle

The WLCL-LDK43-N snap action, limit switch has an actuator which contains a stationary plunger spring, a movable contact arm, and an internal switch attached to the contact arm. When the actuator is activated by the external pressure or force, the internal switch and plunger spring are compressed and the contact arm rotates from the open position to the closed position. The displacement of the plunger spring is limited by the internal stop which prevents a full snap-action effect. This snap-action provides a tactile or auditory effect.

At rest, the WLCL-LDK43-N snap action, limit switch requires very little pressure to activate. The contact arm is held in the off position by the plunger spring. When the pressure or force is applied to the actuator, the plunger spring is compressed and the contact arm moves, creating a 1 mm travel of the contact arm to the closed position before the switch is activated. The travel of the contact arm is limited to 1 mm and provides a uniform velocity profile for the entire contact arm.

When the external pressure or force is removed, the plunger spring forces the contact arm to return to the off position and the switch is deactivated. The reset time or the time for the contact arm to return to the off position is typically only a few milliseconds. This ensures that the contact arm remains in the off position immediately after the switch is released, ensuring a long-term, dependable operation.

Conclusion

The WLCL-LDK43-N snap action, limit switch is an ideal solution for various applications, such as security systems, fire alarm systems, and process control systems. This switch is designed to provide high shock and vibration resistance and offers a reliable, uniform operation with a tactile or auditory feedback. Additionally, the reset time of a few milliseconds makes this switch suitable for installations which require a quick response.

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