DEHN’s unique SPD is now UL 1449 3rd Edition compliant specifically for DC application on 600 and 1,000 V PV systems. This device is intended for use on the DC system to protect systems components such as inverters and others connected to combiner boxes from the effects of lightning caused surges and transients. DEHN has developed and introduced the  DEHNguard M YPV-SCI for operating at PV generated DC voltages by incorporating a switched fused circuit in parallel to the MOV discharge circuit, permitting the internal disconnect to operate arc free. DEHN will celebrate its 100-year anniversary in 2010, serving the electrical industry in research, design, manufacture of products, and offering technical expertise to minimize the effects transients caused by  lightning and other sources. 

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