What Is a Contact Switch?
A contact switch is a switch that controls signals using a contact such as pressure welding or electrical contact.
Contact switches are devices that require many excellent characteristics such as high reliability, long life, and high air resistance due to their important role in controlling signals.
When reliability is required, a contact switch is installed at two or more points, and total control is necessary when all or even one of the switches satisfies the set conditions.
Uses of Contact Switches
Contact switches are used in many fields and locations, regardless of whether they are used for industrial or consumer applications, and regardless of whether they are used outdoors or indoors.
Contact switches are mainly used in production lines for various products, including machining centers. They are also widely used in products that are used by the general public, such as automobiles and motorcycles.
In addition, contact switches are needed and used in elevators, escalators, and many other places where electrical control is required.
Features of Contact Switches
The key point of contact switches is the contact mechanism.
The mechanism of contact switches needs to be changed depending on whether the object is hit and then moves, or whether it stops there.
For example, if the target object moves as it is, the contact switches only need to detect a change in stroke, but if it stops, it is necessary to consider using a pressure sensor.
If the object is conductive, the contact switches should be designed to short-circuit at the tip of the switch, which would be easy to implement.
In addition, if the condition that light is blocked by contact is conceivable, it will be possible to utilize an optical sensor.
Today, sensor technology is rapidly evolving, and the groundwork has been laid for using various types of sensors.