What is the contact resistance of the circuit breaker? All Questions › Category: Switchgear And Protection › What is the contact resistance of the circuit breaker? 0 Vote Up Vote Down Chetan Shidling Staff asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down Chetan Shidling Staff answered 4 years ago In-circuit breaker, the contact resistance is 20 microfarad.