The Optifuse FSD-315MA is a fast acting, glass body, 5x20mm, 250VAC, 3.15A quick blow fuse with a brass finish. The fuse is specifically designed for quick disconnection when an overload or short circuit occurs in order to protect the entire electrical system. The FSD-315MA is ideal for applications that require high inrush currents, such as motors, transformers, blowers, solenoids, contactors, and more. It is sold in bulk for custom assembly, and is UL listed and CSA certified for quality assurance.