Universal 400 Watt, 120-277& 480 Volt Metal Halide Ballast
SKU: M400ML5AC4M500K | Ordering Code: M400ML5AC4M500K
| UPC: 768386172277
|Price per Ballast
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Universal HID MULTI-5 Core & Coil Ballast Kit* Ignites One 400 Watt Metal Halide (ANSI Code M59) or One 400 Watt Mercury Vapor (ANSI Code H33) Lamp of 120/208/240/277/480 Voltage. LAMP NOT INCLUDED.
Number of Lamps
The percentage of a lamp's rated lumen output that can be expected when operated on a specific commercially available ballast. For example, a ballast with a ballast factor of 0.93 will result in the lamps emitting 93% of their rated lumen output. A ballast with a lower ballast factor results in less light output and also generally consumes less power.
Magnetic ballasts are a legacy technology and use inductance to transform the line voltage to the voltage required to "fire" or excite the gasses in a lamp. Electronic ballasts use a variety of starting methods, and are more efficient than magnetic ballasts in converting input power to the proper lamp power and operate fluorescent lamps at higher frequencies, resulting in an overall lamp-ballast system – increasing efficacy 15% to 20% over a magnetic equivalent.
Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
For fixtures and ballasts, width is the measurement of the total horizontal distance from left to right of the product in inches.
For ballasts and fixtures, height is the measurement of total vertical distance from the top of the product to the bottom expressed in inches.
Lamps by Wattage
Ballast Lamp Type
Ballast Lamp Type
The type of bulb the ballast can fire.
For Ballasts, indicates the method the ballast uses to start its bulbs. HID ballasts can be Probe or Pulse start. Fluorescent ballasts can be Rapid, Instant or Programmed start. For HID and Fluorescent bulbs, indicates the start-type of ballast that the bulb will work with.
Q & A
What is the life expectancy of the ballast, is it the same as the light?
Asked on 11/27/2012 by Tom
A typically life expectancy on an HID ballast is 10+ years. However, the life of a ballast can be based on a number of factors including # of On/Off cycles, Length of On time, Heat, Humidity/Dampness/Corrosion, Air quality (i.e. dust/dirt/salinity) or vibration.
Answered on 12/3/2012 by Anonymous
Is it possible to remote mount the ballast 50ft away from the bulb?
Asked on 4/18/2012 by Billy dodds from Houston Tx
This particular ballast can be remotely mounted at various distances depending on the grade of wire used with the ballast (12GA = 132', 14GA = 83', 16GA = 52' and 18GA = 33'). It may be best to choose the 14GA wire in this case to make sure that the ballast will work from 50' away.
Answered on 4/19/2012 by Product Support from Bulbs.com