Fundamentals of Circuit Protection - CEU
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1
A miniature circuit breaker has a higher voltage and amperage capability than a low voltage power circuit breaker. 
2
Which type of circuit breaker is specially designed to prevent fires by detecting a non-working electrical arc and disconnecting the power before the arc starts a fire.
3
Which component provides a means of opening and closing the circuit breaker?
4
Circuit breaker frames are usually constructed out of bolted and welded metal or molded insulating material.
5
Miniature and molded case circuit breakers utilize which type of operating mechanism?
6
The image shown is a representation of which type of protection?
7
Select one of the two types of trip units.
8
Which type of circuit breaker utilizes protective relays instead of internal protective functions?
9
Molded case circuit breakers are only offered with fixed thermal magnetic trip units. 
10
Which of the following is achieved through the use of a bi-metal element heated by the load current?