Arc fault detection device block AFDD, 1-40 A 230 V for MCB or RCBO 1+N 1MW The arc fault detection device (AFDD) with SIARC technology is the protection equipment for accidental arcs. The proven arc fault detection device from Siemens with patented SIARC technology, which constitutes an important element of the SENTRON range of protection components for electrical installations, provides protection against hazardous arcing. No other protective device, be it a miniature circuit breaker, RCCB or fuse system, is able to recognize these serial hazards so reliably. Arcing faults result, for example, from damaged cables, loose contacts or insulation faults, and, in many cases, lead to hazardous fires. Arc fault detection devices detect these hazardous arcs early and switch off safely before a fire can occur. Siemens arc fault detection devices are characterized primarily by: 1. Patented SIARC detection technology 2. The provision of reliable and comprehensive protection for people, systems and assets. 3. Having top technical fire protection performance in that they cover the previous protection gap. 4. Simple installation in conjunction with MCBs and RCBOs. 5. Proven North American technology tailored to the European market. 6. A Data Matrix code which allows quick and easy access to all available information on the arc fault detection device itself when scanned. 7. Optimized technology for your safety – only from Siemens.