How can I test a circuit breaker to ensure it is functioning properly?

To test a circuit breaker, you can use a multimeter to check for continuity and proper voltage. First, turn off the power to the circuit breaker. Then, use the multimeter to test for continuity by placing the probes on the terminals of the circuit breaker. If there is continuity, the circuit breaker is functioning properly. Next, test for proper voltage by turning on the power and checking if the voltage is within the specified range. If the circuit breaker passes both tests, it is functioning properly.