What is utilized to auto sense predetermined electrical faults in circuit breakers?

Relays are devices designed to detect and respond to predetermined electrical faults in circuit breakers. They play a crucial role in the protection of electrical circuits by monitoring conditions such as overcurrent, short circuits, and ground faults. When a fault is detected, the relay triggers the circuit breaker to open, thereby interrupting the flow of electricity and preventing damage to the system.

Relays can be designed with various sensing capabilities, allowing them to accurately detect abnormalities in the electrical current. Their primary function is to provide a fast response to electrical faults, ensuring that sensitive equipment is protected and reducing the risk of fire or other hazards. This makes them an essential component in modern electrical systems.

While thermal sensors respond to temperature changes and mechanical switches may be involved in circuit operation, neither of these serves the same purpose as relays in detecting electrical faults. Voltage monitors can track voltage levels but do not necessarily indicate the presence of faults in the manner that relays do.