NH4 is a European DIN blade type fuse link that is specifically designed for industrial and general purpose cable and line protection. It is used with slotted tag DIN bases. The fuse link is manufactured as a Cd/Pb free structure with conducting grip lugs. It meets the standards of IEC 60269-2, AS60269, DIN43620, and VDE0636/21. The NH4 fuse link has a DIN size of '4' and a breaking capacity of 120 kA. It is rated for a current of 1000 A and a voltage of 500 VAC.