What is the difference between a Switch and Circuit Breaker?

Relays and circuit breakers are devices used to stop currents flowing through circuits. The main difference between relay and circuit breaker is that relay is typically used as a switch in circuits with small currents from flowing in circuits.

A circuit breaker is a device used in an electrical panel that monitors and controls the number of amperes sent through the electrical wiring. Circuit breakers are provided in a variety of sizes. A circuit breaker is a mechanically operated electrical switch made to protect an electrical circuit from harm incurred by excess current from an overload or a short circuit.