What is the difference between relay and circuit breaker?September 20, 2017 by RaviDWQA Questions › Category: Switchgear and Protection › What is the difference between relay and circuit breaker? 0 Vote Up Vote Down Ravi asked 6 years ago 4 Answers 0 Vote Up Vote Down Bhaskar rao from khammam distic telenganastate answered 5 years ago Operating time of circuit breaker is 0.02 sec but operating time of relay is?????« Previous 1 2