Philips electromagnetic HID-Basic semi-parallel copper ballast for use with TS-R 150 Watt CDM, CDO, MH, SON and HPI lamps. A Mk4 ballast it offers improved thermal management, resulting in a cooler ballast, and comes equipped with screw terminal blocks for ease of installation. Further benefits include ThermoSwitch End of Lamp Life protection and minimal watt loss, due to orthocyclic winding. This ballast is for outdoor applications and horticulture lighting solutions and requires an external semi-parallel ignitor (not for SON-I lamps).
for Philips HID-Basic Semi-parallel BSN 150 K202-A2-TS-R Ballast