D4GL-4GFA-A4-NPT

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Snap Action, Limit Switches are a type of switch which has a mechanism that reacts to the physical force or motion applied to it. They are used in a wide range of applications, including sensing, automation and control, as well as signal transmission. The D4GL-4GFA-A4-NPT specifically is a snap-acting, two-circuit, long-stroke limit switch with a 4 mm actuator travel, and a sealed design.

Application Fields

D4GL-4GFA-A4-NPT limit switches are primarily used in the industrial sector. This includes elevators, escalators, automatic doors and hatches, amusement parks, packing systems, and robotics. They can also be used in a wide range of applications from hoisting, automated boilers and furnaces, printing presses, and more.

The D4GL-4GFA-A4-NPT is also suitable for medical and commercial applications. It is suitable for harsh environments and is approved for use in wash down areas, due to its IP-67 rating.

Working Principle

The D4GL-4GFA-A4-NPT limit switches work on the principle of an electrical circuit being opened and closed as a switch as a result of a mechanical movement. When the armature is actuated, the contact points open, closing the circuit and transmitting a signal.

The armature is actuated by an actuator, which is a movable component of the switch. When the actuator is pressed down, the armature moves along a guide rail and presses the contacts together, closing the circuit. This causes an open circuit, thus creating an electrical signal. Then, when the actuator is released, the armature retracts along the guide rail, and the contacts open, again creating an open circuit.

The D4GL-4GFA-A4-NPT limit switch also features a long stroke actuator, which allows the switch to be actuated by a wide variety of inputs, such as a physical force, or motion. It also features a 4mm actuator travel, which ensures a long-term, reliable operation of the switch.

The sealed design of this switch, combined with its long-stroke actuator, makes it ideal for applications that require a switch that can take a lot of abuse, without losing its reliability and accuracy.

Conclusion

The D4GL-4GFA-A4-NPT limit switch is a reliable, accurate and cost effective solution for a wide range of industrial and commercial applications. It is a snap action, two-circuit, long-stroke limit switch, with a 4mm actuator travel, and a sealed design, which makes it ideal for use in harsh environments and washdown areas.

The working principle of this switch is based on an armature which is actuated by an actuator, and when the actuator is pressed down, it moves along a guide rail and presses the contacts together, closing the circuit and triggering an electrical signal. When it is released, the armature retracts, and the contacts open, again creating an open circuit.

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