D4SL-N2CFA-N

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Snap action limit switches have been continually developed to reliably detect limit conditions within the industries of automation, security and access control. They are usually used to detect the opening or closing of doors, gates, lids and drawers, or to detect the presence of materials with a slow-moving or changing profile. In this article, the D4SL-N2CFA-N snap action limit switch will be covered in detail, with particular attention to its application field and working principle.

Application field

The D4SL-N2CFA-N snap action limit switch is used in various applications, such as the detection of presence of materials with a slow-moving or changing profile. This limit switch is also suitable for use in environments of high temperature (up to 70°C) and humidity, making it applicable in industrial environments. Furthermore, due to its low profile and its ability to be mounted vertically, horizontally or inclined, the switch can fit into tight spaces while still providing accurate and reliable switch action.

Working principle

The D4SL-N2CFA-N snap action limit switch is designed with a compact cylindrical body and an actuating plunger. It features a single pole, double throw mechanism, meaning there are two switching points connected to one spring-loaded actuator. The actuating plunger is designed in such a way as to ensure reliable switch action when it contacts an object.

As the plunger is pushed against the switch\'s target object, it compresses the internal spring, which causes the snap action to occur. When the plunger reaches its limit, the switch is triggered, thus providing a closed circuit to allow power to the target device. If a slower switch action is required, slide type switches are also available.

Once triggered, the reset of the switch is acted upon by a single or double spring mechanism. This ensures the switch’s internal contacts return to its original position, thus allowing the circuit to be opened and power to be cut off.

Conclusion

The D4SL-N2CFA-N snap action limit switch is a reliable and versatile solution for applications in automation, security and access control. It features a spring-loaded actuator for reliable switch action, and is suitable for use in high-temperature environments. This switch is also suitable for vertical, horizontal or inclined mounting, due to its reduced profile. These features make it a popular choice among users, ensuring that the switch will continue to be a trusted solution for many industries.

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