DIAZED screw cap DII 25A AC DC 500V ceramic with test hole NEOZED and DIAZED fuse systems with extensive accessories. The NEOZED and DIAZED fuse system from Siemens as an important component of the SENTRON protection components for electrical installations offers effective protection for people, devices and systems by safely switching off in the event of overload and short circuit. It is mainly used in distribution technology and in industrial switchgear. The system can be operated by laypeople and is also approved for domestic installations. The Siemens fuse systems NEOZED and DIAZED are characterized above all by: 1. Coordinated portfolio and accessories. 2. Fuse inserts from 2 A to 100 A in various operating classes. 3. Base versions in classic screw base technology. 4. Proven quality since 1906.