High-output NC (NEMA 4X) Series germicidal fixtures feature the externally mounted design of the the DC Series, however, they include weather-resistant NEMA 4X housing that makes them ideal for outdoor HVAC units. They are available in one-lamp and two-lamp configurations and can be installed vertically or horizontally. Only the lamp(s) and input power wiring penetrate the HVAC unit, while ballast and lamp harness remain external (housed inside the NEMA 4X enclosure).
The NC (NEMA 4X) Series fixtures contain the high-output "green" lamps (≤ 8 mg of mercury; 2-year guarantee), and a five year ballast (non-prorated 5-year warranty) in a NEMA 4X housing specifically engineered for rooftop units and other AC systems mounted outdoors. The NC Series delivers the best and longest-lasting UVC performance available. It has been independently tested to deliver greater output (produces 11.7 µW/cm2 per linear inch of lamp arc length at 1 meter) than any other ultraviolet device under HVAC operating conditions (45° F at 400 fpm air velocity), and the increased output of the lamps provide the most reliable germicidal performance and longest service life.