D4GL-2HFA-A4

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Snap action switches, also known as limit switches, are electromechanical devices used to detect the position or presence of an object in a process. The D4GL-2HFA-A4 is a model of such switch designed for use in industrial environments. In this article, we will discuss the application field of the D4GL-2HFA-A4 and its working principle.

Application Field of D4GL-2HFA-A4

The D4GL-2HFA-A4 is a micro switch specifically designed for heavy-duty industrial use. It is rated IP67 (waterproof up to one-meter depth) and IK08 (impact resistance up to 8 Joules). This makes it particularly suitable for harsh industrial environments, like conveyor chains, car assembly lines, and automated machinery. The micro switch is highly reliable, long lasting, and requires little to no maintenance.

The D4GL-2HFA-A4 has multiple safety-related certifications and is compliant with multiple international standards, including UL, CSA, EN, IEC, and VDE. This makes it suitable for use in multiple global markets. The micro switch is also rated up to 15A @ 250VAC and 10A @ 24VDC, making it suitable for a wide range of applications where high current is required.

Working Principle of D4GL-2HFA-A4

The working principle of the D4GL-2HFA-A4 is quite simple. It consists of two metal contacts that are held in a fixed position and a movable actuator that is connected to the contacts. When an external force is applied, the actuator pushes on the metal contacts, causing them to move and make contact. This, in turn, produces an electrical connection, which is used to trigger a circuit or a control mechanism. The metal contacts return to their original position when the external force is removed.

The D4GL-2HFA-A4 is a single pole double throw (SPDT) switch, meaning that it has two switch positions. One position is referred to as “normally open” (NO) and the other is “normally closed” (NC). When the external force is applied, the switch shifts from one position to the other, and it returns to the original position when the force is removed. The switch can also be locked in the desired position with the help of a set screw.

The D4GL-2HFA-A4 also has a built-in spring mechanism, which ensures that the contacts can return to their original position without any external assistance. The spring also adds to the switch’s anti-vibration capabilities and increases its life span.

The D4GL-2HFA-A4 is designed for AC/DC circuits and is available in multiple versions. It can also be customized with accessories for more specific applications.

Conclusion

The D4GL-2HFA-A4 is a reliable and durable snap action limit switch designed for use in industrial and safety-critical applications. It is waterproof, impact resistant, and compliant with multiple standards, making it suitable for global use. The D4GL-2HFA-A4 is rated for up to 15A @ 250VAC and 10A @ 24VDC, making it suitable for a wide range of applications. The switch’s SPDT design and built-in spring mechanism make it highly reliable and easy to operate.

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