' HID Ballast Kit with Lamp, Lamp Type Metal Halide, Lamp Watts 400, ANSI Code M59, Input Watts 460, Input Voltage 120/208/240/277/480, Ballast Type Core and Coil, Ballast Family HID Magnetic, Number of Lamps 1, -20 Degrees F Min. Starting Temp., Hz 60, Operating Amps @ 120V 4.1, Operating Amps @ 208V 2.3, Operating Amps @ 240V 2, Operating Amps @ 277V 1.7, Operating Amps @ 480V 1, Insulation Class H, Thermal Protection No, Length 4-3/4 In., Width 2-3/16 In., Height 4-1/4 In. '