This is the first lesson in the Limit Switches Course. This lesson describes limit switches, how they work, how to recognize them, and typical applications in which they are used.

Module Objectives

  • Define the purpose, function, and types of limit switches.
  • Explain and visually identify each of the limit switches.
  • Describe safety considerations when working with limit switches.
  • Know how to ensure that a replacement switch will work correctly.


This course consists of four lessons designed to provide training for the multi-craft training needs of process and manufacturing facilities. Topics include purpose and function, types of limit switches, safety considerations, and replacement compatibility. Additional topics include possible malfunctions, maintenance and troubleshooting, solid state, torque and geared, and lever-actuated switches.


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