ABD302NUR

Pushbutton Switches

Pushbutton switches are electromechanical devices used to control the flow of electrical signals within a circuit or between multiple circuits. Typically employed to allow machine operators manually control the operation of a machine, they are used in a variety of applications, from home appliances to commercial systems. One of the more popular types of pushbutton switches available today is the ABD302NUR. This article will focus on the application fields of the ABD302NUR, and will discuss its working principle.

Application Field

The ABD302NUR pushbutton switch is an illuminated switch, which typically is employed in control systems to control the status of electrical circuits. This is possible due to the design of the ABD302NUR which includes a rectangular contact block with blue illuminated lamps embedded into the face. This allows for easy identification of the switch’s status even in dimly lit environments.

The ABD302NUR can also be used in a variety of hazardous area applications, due to its ATEX approval. This approval demonstrates the switch’s ability to perform in potentially hazardous environments, making it suitable to use in the oil and gas industry.

Moreover, the ABD302NUR can be used in a variety of other low voltage applications, such as computer and communication systems, control panels, control display systems, instrument control systems and alarm systems.

Working Principle

The ABD302NUR is a momentary pushbutton type switch, which means it requires user action to keep it switched on or off. This means that the switch will remain in either its open or closed position, until the button is pushed again. In its closed position, the switch will complete the electrical circuit, and in its open position the switch will break the circuit.

When the pushbutton is pressed, a plunger moves from its neutral resting position to an extended position, activating the switch. Depending on the type of switch, this can either be done by pressing and releasing the button, or by twisting the button. Each of these actions will alter the electrical circuit, causing it to become either a closed or an open circuit.

When the plunger reaches the extended position, a microswitch is tripped and the electrical circuit is changed. This causes the microswitch to either open the circuit, or close the circuit, depending on whether the button was pressed or twisted.

The microswitch will remain in either the open or closed position until the user interacts with the switch again, at which point the plunger will return to its resting position, and the microswitch will return to its neutral position.

Conclusion

The ABD302NUR pushbutton switch is an excellent choice for many different applications, due to its illuminated design and ATEX approval. Its versatile design allows it to be used in a wide variety of hazardous and low voltage applications, such as control systems and instrument control systems. Moreover, its momentary nature allows it to be used for both open and closed circuits, making it an ideal choice for many applications.