SUGGESTED ALTERNATE: 

400 Watt M59/H33 120/277 Volt Metal Halide F-Can Ballast

Metal Halide Ballast Cross Reference:
Advance Ballast 72C6082NP
GE 1110247SCTC000I
SLi Valmont 16G8705W
Sylvania Ballast M400/120/277/F-CAN
Sola E-MCAFTJ400F
Grainger 1N109

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.

F-Can ballasts are used primarily for indoor downlighting applications where quiet operation is essential. All the components of these ballasts are enclosed in a fluorescent-style ballast can and are thermally protected.

Universal Ballast 1110247SCTC, Metal Halide Replacement F-Can Ballast Kit for 400 Watt Metal Halide. This F-Can HID Ballast is designed with a Circuit Type CWA, for one 400W Metal Halide Lamp Type, M59 ANSI Ballast Type, 455 Input Watts, 120/277 Input Voltage, 60 Hz. The maximum distance this F Can ballast can be mounted from your 400 watt metal halide bulb is determined by the wire size utilized. It has a sound rating of C and is UL Listed and CSA Certified. The physical dimensions of this F-Can ballast are 19.25" overall length, 18.06" case length and 18.63" mounting dimensions. 

A ballast, like any other electrical device, generates heat during normal operation. Excessive temperature will have an adverse effect on ballast life. Normal temperature limits for Universal F-Can Ballasts have a maximum case temperature of 90°C. For proper installation, insure that remote ballasts are properly vented and mounted to a heat-dissipating surface. Ballasts in metallic casings must always be grounded.