Advance R4S40ATPAC 4-Lamp Rapid Start Ballast

Advance R4S40ATPAC is a four-lamp, magnetic rapid-start ballast from Philips Advance’s Mark III lineup, engineered for 120 V, 60 Hz electrical systems. It drives four F34T12 lamps (34 W each) in a series/parallel configuration, delivering a ballast factor of 0.88 and drawing approximately 1.26 A at nominal input. This 4-lamp Rapid Start ballast features a 60°F minimum starting temperature and is designed for use with T12 rapid-start fluorescent fixtures; its robust design suits commercial luminaires that house four lamps, enabling reliable ignition and steady lamp current in standard four-lamp configurations. The model designation R4S40ATPAC identifies it as part of the Advance Mark III magnetic ballast family, compatible with 120 V, 60 Hz service and typical office/education environments that employ F34T12 lamps.