21HE326-B

Snap Action, Limit Switches

Snap action, limit switches are an instrumental part of any automated system. They are designed to determine the boundary of a particular position within the system and trigger an appropriate response. The 21HE326-B is a popular example of this type of switch, and it has a number of different applications and operating principles.

Operating Principle

At its most basic, the 21HE326-B snap action switch is a mechanical device that is designed to switch an electrical load on and off when a predetermined amount of pressure is applied. As the pressure increases, a small plunger within the switch will travel a predetermined distance and contact the switch contacts. This triggers the switch, causing the current to flow. Once the pressure is removed, the switch will reset and the current will be cut off.

Applications

Snap action, limit switches are incredibly versatile and can be used in a wide range of different applications. In industrial manufacturing, they are typically used as safety switches to detect when a machine is in an unsafe position and automatically shut it down. They are also commonly used in doorbells and various other home automation systems to detect the presence of a person. In addition, they are often used in gaming systems to detect the position of the player’s hands and control the game accordingly.

Advantages

The 21HE326-B has a number of advantages over other types of switches. For one, it is incredibly reliable and can withstand heavy use over long periods of time without failure. Additionally, it is very easy to install, as all that is needed is a power source and a pair of wires. Furthermore, it is very sensitive and can detect small amounts of pressure, which makes it ideal for detecting subtle movements or positions. Finally, it is also very cost-effective and can be used in both commercial and residential applications.

Disadvantages

Despite its many benefits, the 21HE326-B has some drawbacks that should be taken into consideration. For one, the switch is prone to triggering prematurely if not installed correctly or if the pressure applied is too great. Additionally, it does not have the ability to differentiate between different pressures, meaning that it will trigger regardless of the relative force of the pressure. Finally, a separate resetting mechanism is needed to reset the switch after it has been triggered.

Conclusion

The 21HE326-B is an example of a versatile, reliable and cost-effective snap action, limit switch. It is designed to detect a predetermined amount of pressure and switch an electrical load on and off accordingly. Furthermore, it is relatively easy to install and can be used in both commercial and residential applications. Though not perfect, the 21H326-B can bring a great deal of convenience and safety to any automated system.