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Fuses and Circuit Breakers

Learning Objectives

  • Identify some applications that employ fuses
  • Compare the operation of plug fuses to cartridge fuses
  • Discuss factors to consider before replacing a fuse
  • Explain the general function of a circuit breaker
  • Identify three methods of extinguishing an arc in an air circuit breaker
  • List commonly used types of circuit breakers and compare their operation

Available in English

65 Minutes

When you complete this lesson, you will be able to explain the design and function of commonly used fuses and circuit breakers, and how to test and protect them.