PHIL 426023 MH400/U/ED28 12PK
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Manufacturer Signify Lamps
Mfg Catalog # 426023
Codale Part # 126377


  • Long life up to 20,000 hours for 360 and 400 watt lamps.
  • Up to 100 lumens per watt.


  • Ideal for industrial and retail high/low bays, and parking lots.

Warning And Safety

  • WARNING: These lamps can cause serious skin burn and eye inflammation from short wave ultraviolet radiation if outer envelope of the lamp is broken or punctured. Do not use where people will remain for more than a few minutes unless adequate shielding or other safety precautions are used. Certain lamps that will automatically extinguish when the outer envelope is broken or punctured are commercially available." This lamp complies with FDA radiation performance standard 21 CFR subchapter J. (USA:21 CFR 1040.30 Canada: SOR/DORS/80-381)
  • Lamp contains mercury. Manage in Accord with Disposal Laws. See: or 1-800-555-0050


General Information

  • Base: E39 [ Single Contact Mogul Screw]
  • Operating Position: Universal [ Universal]
  • Main Application: General Lighting (G)
  • Life to 50% Failures (Nom): 20000 h
  • ANSI Code HID: M59/E
  • Footnotes HID 2: Rated life: Vertical +/- 15 degrees. Other positions 75% of vertical life. (385)
  • Footnotes HID 3: Vertical lumens. Horizontal lumens 6%–10% lower. (393)

Light Technical

  • Color Code: 640 [ CCT of 4000K]
  • Luminous Flux (Rated) (Min): 32000 lm
  • Luminous Flux (Rated) (Nom): 36000 lm
  • Color Designation: Cool White (CW)
  • Design Mean Lumens: 24000 lm
  • Chromaticity Coordinate X (Nom): 0.390
  • Chromaticity Coordinate Y (Nom): 0.400
  • Correlated Color Temperature (Nom): 4000 K
  • Luminous Efficacy (Rated) (Min): 80 lm/W
  • Luminous Efficacy (rated) (Nom): 90 lm/W
  • Color Rendering Index (Nom): 57

Operating and Electrical

  • Power (Rated) (Nom): 400 W
  • Lamp Current (Nom): 3.25 A
  • Ignition Supply Voltage (Min): 350 V
  • Re-Ignition Time (Min) (Max): 12 min
  • Ignition Time (Max): 120 s
  • Voltage (Max): 150 V
  • Voltage (Min): 120 V
  • Voltage (Nom): 135 V

Mechanical and Housing

  • Bulb Finish: Clear
  • Cap-Base Information: Brass [ Brass Cap]
  • Bulb Material: Hard Glass

Approval and Application

  • Mercury (Hg) Content (Max): 52.0 mg

Luminaire Design Requirements

  • Bulb Temperature (Max): 400 °C
  • Cap-Base Temperature (Max): 250 °C


Codale Part No. 126377
Color Code 640  [ CCT of 4000K]
Base E39  [ Single Contact Mogul Screw]
Product UPC 04667742602
Family Brand Name Philips Lighting
Finish Clear
Color Cool White
Voltage 135 Volt
Type Metal Halide
Diameter 88.9 mm
Weight 0.001 kg
Wattage 400 Watt
Color Temperature 4000 K
Lumens 36000 lm
Base E39
Shape ED28
Amperage 3.25 Amp
Correlated Color Temp 4000 K
Bulb Shape ED28
Max Voltage 150 V
Efficacy 80 LPW
Color Rendering Index 57
Applications General Lighting
Power Rating 400 W
Color Coding 640

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