GE Lighting 42731 Multi-Vapor® ED28 Quartz Metal Halide H.I.D Bulb, 250W


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SKU: 10661374
MFG: 42731


GE HID (High Intensity Discharge) lamps provide high efficacy and low operating cost. The HID is generally the most efficient light source. Better efficiency almost always means lower operating cost. They also have a long life. Most HID lamps have life ratings that are better than incandescent lamps and similar to fluorescent lamps. An HID lamp produces high light output from a relatively compact source. Like incandescent, it is a "point" light source, which allows for good optical control. Light bulb efficiency is measured in lumens per watt (LPW). Rated life for HID lamp life depends on the number of hours per start. The combination of high efficiency and long life makes HID an ideal light source for many commercial and industrial applications.

  • Lamp type: High Intensity Discharge, Quartz Metal Halide
  • Bulb: ED28
  • Base: Mogul Screw (E39)
  • Bulb Finish: Coated
  • Rated Life (Vert): 10000 hrs
  • Rated Life (Hor): 6000 hrs
  • Bulb Material: Hard glass
  • Lamp Enclosure Type (LET): Enclosed fixtures only
  • Mercury Content (NOM): 31 mg
  • Picograms of Mercury (NOM): 239 picograms Hg per mean lumen hour

Photometric Characteristics:

  • Initial Lumens (Vert): 19800
  • Initial Lumens (Hor): 18200
  • Mean Lumens (Vert): 13000
  • Mean Lumens (Hor): 11600
  • Nominal Initial Lumens per Watt (NOM): 73/79
  • Color Temperature (NOM): 3900 K
  • Color Rendering Index (CRI) (NOM): 70
  • Effective Arc Length (NOM): 1 in

Electrical Characteristics:

  • Wattage (NOM): 250.0
  • Burn Position: Universal burning position
  • Open Circuit Voltage (peak lead ballast) (MIN): 540.0 V
  • Open Circuit Voltage (RMS lag ballast) (MIN): 382.0 V
  • Warm Up Time to 90% (MIN): 2.0 min
  • Warm Up Time to 90% (MAX): 5.0 min
  • Hot Restart Time to 90% (MIN): 10.0 min
  • Hot Restart Time to 90% (MAX): 15.0 min


  • Maximum Overall Length (MOL) (NOM): 8.2500 in (209.5 mm)
  • Nominal Length (NOM): 8.2500 in (209.5 mm)
  • Bulb Diameter (DIA) (NOM): 3.5000 in (88.9 mm)
  • Light Center Length (LCL) (NOM): 5.0000 in (127.0 mm)


GE Lighting