D4N-8F20

D4N-8F20 Snap Action Limit Switches

D4N-8F20 snap action limit switches are dependable multi-function switches for industrial and electronic control applications. They operate in a wide range of temperature and humidity ranges, and feature a heavy-duty construction. The non-metallic housings accept UL CSA listed, Class I, Div 2, Groups A, B, C, D approved electrical components. The snap action limit switch employs an internal switching mechanism that provides an extremely sensitive, fast-acting contact. When this happens, the operating force of the switch is then used to break the circuit and open the contacting surfaces of the switch contacts. This is essentially the same way in which these limit switches work.

Application Fields

The snap action limit switch is designed for a broad range of industrial applications, such as:

• Process control
• Injection moulding machines
• Steam boilers
• Heat exchangers
• Computer hardware
• Ovens and dryers
• Power tools
• Motor controllers

The snap action limit switch is specifically designed for use in applications in which mechanical or electronic control of a distance is necessary to obtain repeatable or precise operating conditions. The snap action limit switch can also be used to monitor door and window positions, and to monitor and control the motion of moving machinery.

Working Principles

The snap action limit switch consists of a spring-loaded contact technology. This technology is activated by a momentary contact of any kind, such as a mechanical lever or a sealed button. When a button or lever is pressed or released, the spring-loaded contact is activated and the current flow is then switched on or off. At the same time, the contact is released, allowing a circuit to be opened or closed. This is what is referred to as the “snap action”.

The snap action limit switch is activated by a mechanical force that is usually applied through a lever or button. When the force is applied, it causes the contact to open or close the circuit. The spring-loaded design ensures that the switch quickly opens or closes the circuit even before the force is released.

The snap action switch is also designed to provide a high level of reliability and durability. It operates reliably in a variety of environmental conditions, and its long-term stability and resistance to electrical and mechanical wear and tear are important factors to consider when selecting a limit switch.

The snap action limit switch is also suitable for use in applications where safety is an important factor. Its overload current protection feature makes sure that the switch does not become overstressed when an electric current is running through it. This helps to prevent a situation in which electric shock or fire may be caused by an overloaded circuit.

Conclusion

The D4N-8F20 snap action limit switch is a reliable and durable switch that is suitable for a wide range of industrial and electronic control applications. It operates in a broad range of temperatures and humidity levels, and it features a heavy-duty construction that makes it suitable for highly demanding operations. Its overload current protection feature ensures that electric shock and fire caused by an overloaded circuit are prevented.