The fuse is a safety device designed to protect the circuit and devices from damage caused by excessive current flow. When the current exceeds the fuse's rated value, the fuse will blow and disconnect the circuit, preventing any further damage.
Using a fuse with a lower current rating than the circuit requires is dangerous. The fuse may blow prematurely, causing the circuit to malfunction or even start a fire. Therefore, it's crucial to use a fuse with the correct current rating or a slightly higher one to ensure proper protection.
