Siemens DIAZED Fuse Link 500 V For Cable and Line Protection 5SB221
The DIAZED fuse system is one of the oldest fuse systems in the world. It was developed by Siemens fuse link as far back as 1906. It is still the standard siemens fuses system in many countries to this day. It is particularly widely used in the harsh environments of industrial applications.
The series is available with rated voltages from 500 to 750 V.
All DIAZED bases must be fed from the bottom to ensure an insulated threaded ring when the siemens fuse link is being removed. Reliable contact of the fuse links is only ensured when used together with DIAZED screw adapters.
The terminals of the DIAZED bases are available in different versions and designs to support the various installation methods.
A key feature is the high-performing EZR bus-mounting system for screw fixing. The busbars, which are particularly suited for bus-mounting bases, have a load capacity of up to 150 A with lateral infeed.
DIAZED stands for “DIAmetral gestuftes Zweiteiliges Sicherungssystem mit EDisongewinde” (diametral two-step fuse system with Edison screw).
DIAZED fuse systems area a result of the well-designed modular system, the components can be combined in any way to meet the various requirements and to facilitate different installation methods.
Siemens 5SB221, DIAZED fuse link 500 V for cable and line protection gG, Size DII, E27, 4A