HPS Ballast Cross Reference:
Advance Ballast 71A8271-001D
Sylvania Ballast LU250/MULTI-KIT
Keystone HPS-250A-Q-HP
Universal Ballast S250MLTAC4M-500K
Venture V90D1711K
MagneTek 1230-92S-500K
Howard S025071C211K
Grainger 1A033

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 current that can be drawn.

Core and Coil ballast kits are used in over 90% of all HID lighting. Replacement high pressure sodium (HPS) ballast kits contain the appropriate core and coil, a properly rated ignitor and all components required for ballast replacement. The Keystone Ballast, core and coil, HID ballast kit is ideal for a wide variety of lighting applications, including factories, warehouses, gymnasiums and retail stores.

Keystone Technologies HPS-250A-Q-KIT 250 watt sodium ballast transformer, Quad Tap (also called Multi Tap), replacement high pressure sodium ballasts for 250W HPS, Core And Coil, Circuit Type CWA, high pressure sodium 250 Lamp Watts, S50 ANSI Ballast Type, 300 Input Watts, 120/208/240/277 Input Voltage, 60 Hz. These high pressure sodium ballast kits carry a 2 year warranty.

Specification Sheet