What does 312 mean on a fuse?
The number 312 on a fuse indicates the size of the fuse. The number refers to the fuse's maximum current rating in amperes (A). In this case, the fuse has a maximum current rating of 312 A. This means that the fuse will safely carry up to 312 A of current without blowing. If the current flowing through the fuse exceeds 312 A, the fuse will blow, breaking the circuit and preventing damage to the electrical device.