What can occur if a mechanical linkage in a circuit breaker fails?

If a mechanical linkage in a circuit breaker fails, severe damage can occur because the circuit breaker is designed to protect electrical circuits by interrupting excessive current flow. The mechanical linkage plays a crucial role in the operation of the circuit breaker, allowing it to trip and disconnect the circuit when necessary. If this linkage fails, the circuit breaker may not operate as intended, failing to interrupt the current in case of an overload or short circuit. As a result, this can lead to overheating of wiring, damage to electrical components, or even cause fires, leading to potentially catastrophic consequences. Therefore, the failure of the mechanical linkage directly correlates with the likelihood of severe damage occurring within the electrical system.