Circuit breakers are used everywhere – in our homes, offices, and electric facilities. The degradation of the electrical insulation that is an integral component of these protective devices, can be influenced from both environmental and operational stresses. Additionally, oxidation and ware of circuit breaker contacts can lead to relatively high resistance connections and overheating of the circuit breaker. In the worst case, contacts can become welded together, thereby defeating the protective intent of the circuit breaker. This is why it is important to utilize the proper electrical test equipment when testing, to ensure that the circuit breaker is properly fulfilling its intended purpose.
Read More »DC Tests for Circuit Breakers