DEHN is a world leading manufacturer of Lightning and Surge Protection for all low voltage class power systems, measurement and control, instrumentation, communications and information technology. DEHN, now celebrating its 100 year anniversary in lightning and surge protection and safety equipment, also contributes substantially to advances in surge protective device (SPD) (aka. TVSS) technology, through our research and development activities, and contributing with technical organizations through out the world.

DEHN's SPD (TVSS) products are primarily of a modular DIN rail mounted design, and have ability to manage the affects of lightning current energy (10/350 µsec) and surge current (8/20 µsec) discharges. The transient voltage surge suppressors are designed for application on various conductor configured systems including, single and paired conductors, coaxial; and for protocols such as 4-20 mA loop, Ethernet, CAT 6, RS 485 and 232, Fieldbus Foundation and many others.