At the end of this lesson, you will understand the purpose and use of low voltage circuit breakers in electrical circuits. • Describe the function of low voltage breakers • Describe low voltage, molded case breakers and low voltage, large frame breakers; identify their differences • Explain how to connect a large frame breaker • Define the low voltage breaker voltage category • Describe how an arc is formed and extinguished • Explain why breakers trip and describe breaker closing and tripping devices
