50 Watt S68 High Pressure Sodium 120V Ballast Kit No USPS 000 Lumens Means Lumens 24

000 Lumens Means Lumens 24

GE MPR400/VBU/O

Advance Ballast 71A7971-001D

Voltage 120 Volt UPC 890949002612 Lamp Type 35W High Pressure Sodium (HPS) ANSI Designation S76 Dimensions 2

50 Watt S68 High Pressure Sodium 120V Ballast Kit No USPS 000 Lumens Means Lumens 24HPS Ballast Cross Reference: Advance Ballast 71A7807 Sylvania Ballast LU50 120R Keystone HPS 50R 1 KIT MagneTek 1233 35U Venture V90B1120 High Intensity Discharge (HID) lamps require a ballast to apply starting voltage to the lamp and establish current flow an arc between the lamp electrodes. Without a ballast, the arc will extinguish or draw increasing current until some circuit element burns up. Ballasts provide system stability by limiting the