Should I replace a breaker that keeps tripping?

Replacing a circuit breaker solely because it keeps tripping is rarely the correct first step, because a breaker is simply doing its job by reacting to an external electrical overload, short circuit, or ground fault originating somewhere in the branch circuit. Instead of immediately replacing the breaker, you should first investigate and isolate the root cause by unplugging devices, checking for frayed cords, and redistributing heavy electrical loads across different circuits. However, if you have verified that the branch circuit wiring and connected appliances are completely healthy, and the breaker still trips instantly even under zero load or feels loose and fails to hold a firm "on" position, then the breaker itself is defective and must be replaced. You can troubleshoot electrical faults safely by turning off power before inspection. You can verify that your corrective action is successful when installing a properly rated replacement breaker ensures the circuit holds stable voltage without tripping under normal daily operation.