QTP T8 2x32 Instant Start Ballast – ISN is a QUICKTRONIC professional series ballast. The QTP T8 ISN ballast is a 2 lamp solution with universal voltage (120-277V) and a high power factor (> 98%) QTP T8 Instant Start Ballasts – ISN are RoHS Compliant The QTP T8 ISN is ideal for commercial, retail, hospitality, institutional, new construction and retrofit applications.