This is a NFC fuse cartridge for TeSys GS switch-disconnector fuses devices. It is a gG fuse-link that protects against thermal overloads and magnetic over currents, used in standard applications. Its current rating is 4 A and the maximum rated voltage is 400 VAC. It is a cylindrical fuse (NFC type), the dimensions are 8.5mm x 31.5mm. It has no striker to indicate when the fuse is blown. This fuse is sold by set of 10 parts.