What are the reasons for fuses?

Fuses are protective devices used in electrical circuits to prevent overcurrent situations that can lead to overheating and potentially cause fires. They work by melting and breaking the circuit when the current exceeds a specific threshold, thereby interrupting the flow of electricity. This helps to safeguard appliances and wiring from damage and ensures the overall safety of the electrical system. Additionally, fuses are cost-effective and easy to replace when they blow.