Arc extinction is the process of quenching the electrical arc that occurs when the contacts of an electrical circuit breaker separate, preventing damage and ensuring safety. Effective arc extinction requires interrupting the current flow before it can reignite, often achieved using techniques like cooling, stretching, or splitting the arc.
Fuse characteristics refer to the specific electrical and physical properties that determine how a fuse will behave under different conditions, such as its current rating, voltage rating, and interrupting capacity. Understanding these characteristics is crucial for selecting the appropriate fuse to ensure circuit protection and prevent damage to electrical systems.