7A 3AB/3AG Ceramic Fast Blow Fuse

A ceramic fuse offers better thermal and arc protection during a high current episode compared to a glass fuse with the same specifications. Sometimes marked with an F before the current rating (for example F3.15A), these fast acting fuses are designed to go open circuit very quickly in an overload or short circuit condition in a huge range of devices. The 3AB reference is the way to differentiate from 3AG (glass) fuses of the same size.