Which protective device melts its fusible link when the current exceeds safe limits?

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Multiple Choice

Which protective device melts its fusible link when the current exceeds safe limits?

Explanation:
A fuse provides overcurrent protection by using a fusible link that melts when the current is too high. The thin conductor inside a fuse heats up as current exceeds its rating, and the metal link melts, opening the circuit to stop current flow. This one-time safeguard must be replaced after it blows. In contrast, a circuit breaker trips a mechanism to interrupt current and can be reset after the fault is cleared, while resistors and capacitors are passive components that don’t function as overcurrent interrupting devices.

A fuse provides overcurrent protection by using a fusible link that melts when the current is too high. The thin conductor inside a fuse heats up as current exceeds its rating, and the metal link melts, opening the circuit to stop current flow. This one-time safeguard must be replaced after it blows. In contrast, a circuit breaker trips a mechanism to interrupt current and can be reset after the fault is cleared, while resistors and capacitors are passive components that don’t function as overcurrent interrupting devices.

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