Combined protection, tested in category D, C, B (EN 61643), specifically designed for RS485 and fieldbus applications such as Profibus DP. For use at limits from LPZ 0 for protection against flashover (typically at the cable entry point) to LPZ 3. Available in standard OVR RS485 format or compact OVR RS485Q and Slim Line OVR RS485 versions for installation.
