D4GL-2DFA-A4

Snap action, limit switches are devices that are used to detect the presence or absence of a physical action. Commonly seen in industrial settings, these switches are used to detect the presence of a specific part, in order to control or limit the movement of a specific process. D4GL-2DFA-A4 switches are a type of snap action switches that are used for a variety of applications.

Application Field: D4GL-2DFA-A4 switches are commonly used in industrial, automotive, and home appliance applications. In industrial settings, these switches are commonly used to detect the presence of a mechanical part that needs to be stopped or limited in order to continue the operation of a certain machinery. For example, they could be used to stop a conveyor belt if a certain part is not present, or to limit the travel of a slide element in an automated assembly line. In automotive applications, these switches are often used to detect the presence of safety features, such as airbags, crumple zones, seat belts, and so on.

Working Principle: D4GL-2DFA-A4 switches are generally of the static design type, with the contacts being in an open circuit condition until an applied force or pressure exceeds a predetermined limit. When this threshold is reached, the contacts of the switch snap from an open circuit to a closed circuit condition, resulting in the switch being activated and the set process being triggered. This phenomenon is referred to as snap action. The actuation force or pressure required to activate the switch may be adjusted depending on application.

These switches are usually constructed from either thermoplastic or metal housings, depending on the application. Inside the housing is an actuating element, usually an armature or plunger, which is linked to two electrically conductive contacts. The contacts may be either of a normally open or normally closed type. When the actuation force or pressure exceeds a certain threshold, the actuating element causes the contacts to come into contact and the switch is then said to be switched "on". Once the applied force is removed, the switch returns to its original state and the contacts open, switching "off".

The actuation force or pressure of these switches is generally adjustable, allowing them to be optimized for the particular application. This force can also be adjusted based on the specific needs of the application – for example, for applications where a lower force is preferable, the actuation force can be set to a lower level. In addition, many D4GL-2DFA-A4 switches also feature a wide temperature range and higher protection ratings, making them suitable for use in extremely cold or hot conditions.

D4GL-2DFA-A4 switches are also commonly used in home appliance applications, such as washing machines, dishwashers, and so on. In these cases, the switches are usually used to detect the presence of a part or to limit the travel of a movable element, such as a door opener or a spin cycle control. In these applications, the actuation force must be set to a level that is suitable for operation in a domestic environment.

Overall, D4GL-2DFA-A4 switches are versatile, durable, and reliable devices that are used in a wide range of applications. With the ability to adjust the actuation force or pressure, these switches can be customized to meet the needs of the application, making them a great choice for any number of industrial and home appliance applications.