A. A circuit breaker is a Fuse
B. A circuit breaker is a Switch
C. Resettable protective device
D. A circuit breaker is a Resistor
Circuit breaker is a is Resettable protective device. It is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected.
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