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1. Introduction
A circuit breaker is an electronic/electrical component that makes a circuit open so that no current can flow through it. It is used to prevent the damage caused by excess current from an overload or short circuit.
Generally, fuses are considered to be a circuit breaker, but there is a subtle difference between circuit breakers and fuses. Fuses operate once and must be replaced but the circuit breaker can be reset to resume the normal operation.