Snap Action

Snap action, or also known as snap-acting, describes a mechanical device that is activated when pressure is applied. When the pressure is removed, the device returns to its original state, reverting to its previous position or setting. Snap action is a very beneficial in applications, due to its precision and efficiency, as well as its ability to the ability to complete a motion quickly and return to a stable position.

4SX1-T2 Snap Action Limit Switches

An excellent example of a snap action switch is the 4SX1-T2, produced by Omron Automation. This limit switch is a heavy-duty snap action switch that provides long-lasting contact durability with its silver contacts, a built-in dust cover, and a large strain relief. In addition, the 4SX1-T2 lso features a double break design, which prevents it from being repeated open and close.

Application Fields and Working Principle

The 4SX1-T2 snap action limit switch is most commonly used in high-power industrial applications, such as hydraulic machinery and production lines. It can also be used in home automation and light industrial applications, such as appliances, water heaters, and certain types of HVAC systems. The main application of this switch is to detect the motion and presence of an object. It is activated when a mechanical force is applied to the switch, such as when a lever or button is activated. Once the switch is activated, it triggers a signal to indicate that the switch has been engaged. This enables automated processes to be initiated or halted, depending on the operational parameters.

The operation of the 4SX1-T2 snap action switch is based on a simple mechanical principle. When pressure is applied to the switch, it operates a set of levers which in turn, cause the contacts to break or make. This action is then transmitted to an electrical contact, which either makes or breaks the current. This process is generally very quick and efficient, and it is possible to have multiple switches of this type in a single system. Furthermore, the 4SX1-T2 is designed to act as a reset switch, so that it can be pressed again, to complete the cycle and reset the switch once more.