Switches in both electrical and electronics industries have a great importance. The basic function is that either it connects or disconnects with the electric power supply. Basing on its incomparable functions, switches are of various types basing on various specifications.
Limit switch has its own importance and significance. As per definition, the limit switch is an electromechanical device consisting of an actuator which is mechanically linked to a set of contacts. The mechanism is that when an object comes into contact with the actuator, the switch operates the contacts to make or break an electrical connection. The use of limit switches is very demanding in lifts. Basing on this specific usage it is called as Lift limit switch. It has four important functions such as Access, Slow Down, Normal, and Final Limits. The most advantageous feature of elevator limit switches are light weight and durable having little noise.
There is another most important switch commonly known as momentary switch. There are a variety of applications that use momentary switches in every-day life. It is such a device which makes any electronic device to either an on or off state when an end-user presses the switch. For example, a momentary limit switch in an elevator is a push-to-break momentary switch that does not release the electromagnetic door until it is pressed. When a key is pressed, the electrical circuit for the respective key becomes functional.
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