What is the purpose of a circuit breaker?

The purpose of a circuit breaker is to interrupt current flow for protection. A circuit breaker is designed to automatically open a circuit when it detects an overload or a short circuit. This action prevents excessive current from flowing through the system, which can cause overheating, electrical fires, or damage to electrical equipment.

The circuit breaker acts as a safety mechanism that ensures that the electrical circuits within a system are protected. For example, if the current exceeds a safe level due to a fault, the breaker will trip, cutting off power and minimizing risk to both people and property. This makes it a crucial component in electrical systems, providing a means of safeguarding against electrical hazards.

By focusing on controlling the flow of electrical current, rather than amplifying signals or changing voltage and resistance, the circuit breaker fulfills its primary role effectively, ensuring that electrical systems operate safely and reliably.