What happens to a circuit when a fuse breaks?

When a fuse breaks, it creates an open circuit, which interrupts the flow of electricity. A fuse is designed as a safety device; its purpose is to protect the circuit from excessive current that could cause damage or pose a safety hazard. When the current flowing through the fuse exceeds its rated limit, the fuse element melts and breaks the circuit, stopping the flow of electricity entirely.

This interruption means that any devices or appliances powered by that circuit will stop functioning until the fuse is replaced. The operation of the circuit is directly linked to the integrity of the fuse; once it is compromised, the circuit will not function until the fault is addressed. Understanding this mechanism is crucial for safety and proper maintenance in electrical systems.