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According to application, the DEHN “wave breakers” are designed as combined lightning current and surge arresters, coordinated lightning current arresters and lightning current arresters. With DEHNventil ® , DEHNbloc ® M and DEHNbloc ® , the user will find the right solution for every type of installation. DEHNventil ® M Combined Lightning Current and Surge The 2-, 3- and 4-pole DEHNventil M devices are definite combined lightning current and surge

Arrester

DEHNventil ® M TT arresters. DEHNbloc ® Maxi S DEHNbloc ® M

To ensure that ignited spark gaps will cause no short circuits at the installation, only spark gaps with a high self- extinguishing capability and follow current limitation are used. The “RADAX Flow” follow current limiting and extinguishing technology developed by DEHN + SÖHNE allows for a selectivity with respect to small-sized installation fuses of 20 A gL/gG even in case of prospective installation short- circuit currents up to 50 kA rms . 100 t

The Wave Breakers Lightning Protection Zones 0 A/1 and 0 A/2 In order to render the “impact” of the “lightning flood wave” harmless for the electrical installation affected, powerful creepage discharge spark gaps are used. With their unique capability to reduce the pulse time, these spark gaps are also called “wave breakers”. Alternative technologies such as varistors fail because of the high energy transformation due to their continuous current- voltage cha