This Keystone 4 Tap (120-Volt/208-Volt/240-Volt/277-Volt) Metal Halide ballast kit operates 1 M57 175-Watt Metal Halide lamp. The kit includes ballast, capacitor, mounting brackets and hardware. See the document below for complete specifications.

• ANSI designation: M57 or H39
• Line voltage: 120/208/240/277
• Regulation: 10%
• Frequency: 60 Hz
• Recommended fuse (A): 5/3/3/2
• Circuit type: CWA (without ignitor)
• Insulation class: 180 degree C
• Capacitor value: 10 degree F
• Capacitor voltage rating: 400-Volt
• Capacitor temperature rating: 90 degree C
• Winding materials: copper/aluminum
• Lamp starter: n/a
• Agency certification: RU, cRU
• Maximum distance to lamp: n/a
• 2-year warranty