Lesson series

Molded Case Circuit Breakers

This training module is designed to inform students from beginner or expert about the essential concepts for applying molded case circuit breakers. 
This course qualifies for NETA 1.5 CTD credit, 1.5 CEU credit for the State of Pennsylvania and 1.5 CEU State of Delaware.
Course Length - 1.5 Hours
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What's included?

  • Course Outline
  • Breaker Basics
  • How breakers operate
  • Circuit Breaker Components
  • Calculate Short Circuit Current
  • Series and 100% rated breakers
  • Selective coordination
  • Internal Breaker Accessories
  • External Breaker Accessories
  • Breaker Applications
  • How a circuit breaker is assembled
  • Enclosed Breakers
  • Trip curves
  • Selection Factors

Learning Objectives

Upon completion of this course, the student will be qualified to:
• Understand breaker basics
• Understand how breakers work
• Identify the breaker components
• Learn PEARL reconditioning standard
• Know the UL requirements for thermal and short circuit
• Understand the different trip characteristics
• Calculate short circuit current
• Understand series rated breakers
• Know how to de-rate breakers to UL and NEC requirements
• Understand selective coordination
• Recognize ground fault applications
• Become familiar with 100% rated breakers
• Be familiar with the available breaker accessories
• Recognize where enclosed breakers can be uses
• Understand how a breaker is assembled
• Understand the selection factors


 You will also learn how to compare the economics of using 100% rated breakers over derated 80% rated breakers.

Course Lessons