Siemens neozed fuse link 400v ac size do1 and do2 siemens 5se2304 the siemens 5se2304 is a neozed fuse link that is primarily used in neozed fuses systems in distribution technology and industrial switchgear assemblies the fuse is size do1 and rated at 400v ac 4a colour coded brown siemens 5se2304 neozed fuse do1 4 a 10 pcs