What type of device can be reset and reused after interrupting a circuit?

What type of device can be reset and reused after interrupting a circuit?

• A. Circuit Breaker
• B. Fuse
• C. Switch
• D. Connector

Answer: (A)

A circuit breaker is a protective device that can interrupt the current flow in a circuit when there is an overload or a short circuit. Once the fault has been cleared, a circuit breaker can be reset manually or automatically, allowing the circuit to be reused without needing to replace any components. This feature distinguishes circuit breakers from fuses, which must be replaced once they blow. In contrast, a switch simply opens or closes a circuit and does not provide overload protection. Connectors serve to join two or more electrical circuits and do not have the capacity to interrupt a circuit on their own for safety purposes. Therefore, a circuit breaker is the correct device for this scenario, as it is explicitly designed for circuit management, protection, and ease of reuse.

A circuit breaker is a protective device that can interrupt the current flow in a circuit when there is an overload or a short circuit. Once the fault has been cleared, a circuit breaker can be reset manually or automatically, allowing the circuit to be reused without needing to replace any components. This feature distinguishes circuit breakers from fuses, which must be replaced once they blow.

In contrast, a switch simply opens or closes a circuit and does not provide overload protection. Connectors serve to join two or more electrical circuits and do not have the capacity to interrupt a circuit on their own for safety purposes. Therefore, a circuit breaker is the correct device for this scenario, as it is explicitly designed for circuit management, protection, and ease of reuse.