Satco High Pressure Sodium (HPS) light bulbs deliver more lumens per watt over their rated life than most other HID light sources available today. These high-efficiency, golden-white High Pressure Sodium light bulbs meet todays energy-conscious specifications requiring the efficiency of high light output and long life with excellent lumen maintenance. High lumen output yields significant energy savings.

Satco ANSI S51 400W LU400 (S1941) High Pressure Sodium bulbs are intended primarily for use in enclosed luminaires. Initial Lumens 51,000, Rated Average Life 24,000 Hours based on 10 hours per start, ANSI Ballast Type S51. These Satco HPS lamps employ an E39 Mogul Base and are designed with an ET18 bulb. Satco HYGrade LU400 400W ET18 E39 Mogul Base Clear S51 HPS bulbs are excellent replacement bulbs for GE 85379 LU400/H/ECO, Sylvania 67533 LU400/ECO or Philips 368811 C400S51/ALTO. They offer long life, maximum efficiency, and brighter light than an incandescent light source for a variety of indoor and outdoor applications. These Satco HPS lights are ideally used in parking areas, terminals, walkways, building facades, bridges, roadways, and industrial installations.

Specification Sheet