What is the rated current of a fuse?

The rated current of a fuse refers to the maximum current that it can safely carry continuously without melting or breaking. This rating is critical because it ensures that the fuse provides adequate protection for the circuit it is installed in. When the current flowing through the fuse exceeds its rated current, the fuse will heat up and eventually melt, interrupting the circuit and preventing damage to other components.

Understanding this rating helps in selecting the appropriate fuse for specific applications, ensuring that the chosen fuse can handle the expected load without failing during normal operation. The rated current is a key specification for fuses and is essential for proper electrical safety and functionality.