- Course 134.
- 1 Week.
- 3.6 CEU.
Low-voltage power circuit breakers are one of the most critical and neglected overcurrent protection devices in any power system. Increased exposure to moisture and contaminants make this type of circuit breaker very susceptible to failure.

With proper maintenance, technicians can prevent nuisance trips, and ensure tripping operations execute as required. In addition to improving electrical system reliability, by ensuring optimum fault clearing times, well maintained circuit breakers minimize the arc flash hazard energy levels that technicians can be exposed to during a fault.
Every overcurrent device and circuit breaker combination has its operation indicated on time current characteristic curves provided by the manufacturer. A good portion of this course deals with reading a wide variety of overcurrent trip devices and their corresponding time characteristic curves.
Participants in this class will visually and electrically inspect circuit breakers according to manufacturer and NETA MTS requirements. Based on results of the tests, technicians should be able to make pass/fail decisions on circuit breakers.
Who Should Attend
This hands-on course is intended for new or experienced electricians and technicians that install, maintain, repair or troubleshoot power circuit breakers, rated less than 1,000 VAC, equipped with electromechanical or solid state tripping devices. The participant should have basic knowledge of AC/DC electricity.