This HID-Basic semi-parallel copper ballast from Philips Lighting is a proven and reliable solution for running CDM, CDO, MH, SON and HPI lamps rated at 400 Watts. An impregnated, electromagnetic ballast, this Mk4 version has improved thermal management features, resulting in a cooler ballast and comes equipped with screw terminal blocks for ease of installation. Featuring End of Lamp Life protection as standard it also boasts minimal watt loss. This ballast is for outdoor applications and horticulture lighting solutions.
for Philips HID-Basic Semi-parallel BSN 400 K407-ITS Ballast