Is a circuit breaker and safety switch the same thing
A circuit breaker (left below) is designed to limit the flow of electricity through a given circuit in your home, thus reducing the possibility of a fire due to overloaded circuits. A safety switch (right below) is designed to save lives by interrupting the flow of electricity quickly.
A safety switch has a 'TEST' button. A circuit breaker does not.
Circuit breaker has no TEST button
4 pole (left) and 2 pole Safety Switch. Note the Blue test button at the top of the unit