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400 Watt MH 5-Tap Ballast Kit
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Their Price: $94.50
Our price (Before qty discounts*): $79.40
You Save at least: $15.10
In stock
Item Number: MH-400A-P-KIT
Manufacturer: Keystone Technologies
Manufacturer Part No: MH-400A-P-KIT
Buy extra and SAVE even more!
| Quantity | Amount |
| 1 to 2 | $79.40 |
| 3 to 5 | $75.43 |
| 6 or more | $73.05 |
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Metal Halide Replacement Ballast Chart:
Advance Ballast 71A6051-001D
Universal Ballast M400ML5AC4M-500K
Howard M0400-81C-211
Sola E-MCAWDD400
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. Click here to view our offering of major brand Medium and Mogul Base Metal Halide Lamps.
Core and Coil metal halide HID ballasts are used in over 90% of all HID lighting. Replacement ballast kits contain the appropriate core and coil, a properly rated capacitor 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 Ballast MH-400A-P-KIT (Click here to see the complete Wiring Diagram and Specification Sheet.), 400 watt ballast transformer, 5-Tap, replacement metal halide ballasts 400W Metal Halide , Core And Coil, Circuit Type CWA, Metal Halide Lamp Type, 400 Lamp Watts, M59/H33 ANSI Ballast Type, 450 Input Watts, 120/208/240/277/480 Input Voltage, 60 Hz. This Keystone Ballast carries a 2 year warranty (Click here to see the complete Keystone Technologies Warranty).
Note: These MH-400A-P-KIT lighting ballast are also valid replacement HID kits for 400 watt mercury vapor light fixtures. Also rated as an ANSI code H33 ballast, this UL listed ballast serves multiple applications.

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Their Price: $42.95
Our price (Before qty discounts*): $34.85
You Save at least: $8.10
Sylvania MP400/BU-ONLY - 64705 - 400 Watt, ANSI M59/O, Metal Halide Bulb Open Rated Mogul Base - HID replacement lamps for GE MPR400/VBU/O, Philips MP400/U, Venture MPI400W/BU/HO and Grainger 1E099.
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Their Price: $35.00
Our price (Before qty discounts*): $29.73
You Save at least: $5.27
Sylvania M400/U/ET18 - 64575 - 400 Watt, ANSI M59, Metal Halide Bulbs - HID replacement lamps for Sylvania M400/U/ET18, Venture MH400W/U/T15 and Eiko MH400/U/T15.
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Their Price: $169.00
Our price (Before qty discounts*): $147.84
You Save at least: $21.16
Universal Ballast 1110247SCTC - 400 Watt Metal Halide M59 F-Can Ballast Kit - 400W Metal Halide Replacement F Can for Advance Ballast 72C6082NP, Sylvania Ballast M400/120/277/F-Can, Sola E-MCAFTJ400F and Grainger 1N109.
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