What is the primary function of a plug fuse?

The primary function of a plug fuse is to interrupt excessive current flow. This protective device is designed to safeguard electrical circuits and appliances from damage or hazards that can occur due to overcurrent. When the current flowing through the fuse exceeds its rated capacity, the fuse element melts, breaking the circuit and preventing further flow of electricity. This interruption is crucial in protecting wiring and electronic devices from overheating, potential fire hazards, and damage that could arise from excessive current.

The focus on excessive current flow highlights the fuse's role as a protective mechanism, emphasizing the importance of safety in electrical systems. By ensuring that current levels remain within safe operational limits, plug fuses help maintain the integrity of both the electrical system and the devices connected to it.