This is a NFC fuse cartridge for TeSys GS switch-disconnector fuses devices. It is a aM fuse-link that protects against magnetic over currents only, adapted for motor protection. Its current rating is 20 A and the maximum rated voltage is 400 VAC. It is a cylindrical fuse (NFC type), the dimensions are 10mm x 38mm. It has no striker to indicate when the fuse is blown. This fuse is sold by set of 10 parts