R3&A Limited   Your Partner in Lightning and Surge Protection Solutions, and Domotics


External Lightning Protection System Design More comprohensive than CSA B-72, UL 96 and NFPA 780, the IEC 62305 provides for a more robust external lightning protection system. R3A and DEHN provide design assistance from engineering through installation. Internal Lightning and Surge Protection System Design We offer comphrehensive planning and design services for internal lightning and surge protection in accordance with the Lightning Protection Zone concept “LPZ”. For more info email info@r3alimited.com

Site Surveys

Protection System Plan and Report The result of the survey is a comprehensive report that includes recommendations for repairs or improvements along with any recommendations for additional equipment. Email info@r3alimited.com

Software and Calculation


The DEHNsupport Toolbox software offers a variety of calculation options in fields of lightning protection ranging from risk management to the calculation of the length of the air-termination rods, separation distances and lenghth of electrodes. For more information click here DEHNselect SPD Tool The DEHNsupport Toolbox software has been expanded with another module and now also offers comprehensive support for planning internal lightning and surge protection. For more information click here  
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