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

Module Objectives

  • Describe the internal function of a lever-actuated limit switch and its function in a control circuit.
  • Maintain, troubleshoot, repair, and adjust a lever-actuated limit switch.
  • Describe the possible malfunctions of a lever-actuated limit switch.


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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