Limit Switch
a switch that operates as an automatic control to prevent a mechanism or process from going beyond a prescribed limit.
A switch preventing the travel of an object in a mechanism past some predetermined point, mechanically operated by the motion of the object itself.
In electrical engineering a limit switch is a switch operated by the motion of a machine part or presence of an object.
They are used for controlling machinery as part of a control system, as a safety interlocks, or to count objects passing a point. A limit switch is an electromechanical device that consists of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection.
Limit switches
are used in a variety of applications and environments because of their ruggedness,
ease of installation, and reliability of operation. They can determine the presence or
absence, passing, positioning, and end of travel of an object
LIMIT SWITCH. Merriam-Webster Online Dictionary. Retrieved from: https://www.merriam-webster.com/dictionary/limit%20switch
Словник Lexicoелектронний ресурс: www.lexico.com
Stephen Herman, Industrial Motor Control Cengage Learning, 2009 chapter 11 "Limit Switches" ISBN 1435442393
Limit switch. Definitions.net. Retrieved from: https://www.definitions.net/definition/limit+switch