D4B-3181N

Snap Action, Limit Switches

D4B-3181N is a snap action, limit switch designed and manufactured by OMRON Corporation. It is a two-layer switch designed to guarantee SPDT with two-stage snap action, combine with a variety of actuators. This snap action, limit switch provides two pole SPST snap action with potential versatility and excellent repeatability characteristics.

Application Field of D4B-3181N

The application field of D4B-3181N includes office automation devices, home appliances, industrial automation devices, medical apparatus, and instrumentation devices. An automation device relying on D4B-3181N can be found in video game systems, vending machines, copiers, production equipment and most home automation systems. Moreover, the applications of D4B-3181N extend to include industrial machines and light-weight sensors that are powered by a battery.

Working Principle of D4B-3181N

The D4B-3181N snap action, limit switch is made up of two different layers. The inner layer consists of a plunger, while the outer layer features two contacts that are fixed to the housing. When the plunger is moved, the outer contact closes and creates a complete electrical circuit. The internal components of the switch produce a snap action when the plunger is released, ensuring that the switch can be operated with excellent repeatability characteristics. The plunger also returns back to its original position due to its special geometry, which guarantees reliable and exact operation. The contacts of the switch remain in the same position even with high vibration environments or shocks. In addition, the switch has the additional feature of being able to accept a wide range of actuators such as roller lever and straight lever.

The D4B-3181N snap action, limit switch can also be used for high-speed switching required for VME bus systems. It offers a unique combination of versatility, reliability, and low cost for a variety of applications. Additionally, this switch has been optimized and certified for ruggedness and offers a high degree of protection from voltage spikes that can damage sensitive electronic products. The D4B-3181N also has a built-in provision for a heater which increases production capability, extending the life of the switch.

Conclusion

D4B-3181N is a two-layer snap action, limit switch that offers a wide range of applications, excellent repeatability characteristics and reliable operation. This switch has been optimized for use in many different applications such as office automation devices, home appliances, industrial automation devices, medical apparatus and instrumentation devices. The plunger and special switch geometry ensures a reliable and repeatable operation, while the protections built into the switch provide additional security against voltage spikes and other external disturbances. Furthermore, the extended lifetime and additional features of the switch make it a great choice for many applications.