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    • Switch Start Metal Halide Standard

      MH400/U/ED28 12PK
      MH400/U/ED28 12PK
      Switch Start Metal Halide Standard

      MH400/U/ED28 12PK

      Order code: 426023


      Spec Sheet
      Size:290.5 kB

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    Specifications Show all

    General information
    E39  [ Single Contact Mogul Screw]
    Operating Position
    Universal  [ Universal]
    Main Application
    General Lighting (G)
    Life to 50% Failures (Nom)
    20000 h
    ANSI Code HID
    Footnotes HID 1
    Requires a ballast specified or approved for Philips metal halide lamps, or one that is designed to operate all popular brands of metal halide lamps. 1000W types will operate from H36 conventional lag type ballast for Mercury Vapor lamps at ambient temperatures of 50 degrees F or higher. 1000W types must not be operated at 1500W. (377)
    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)
    Chromaticity Coordinate Y (Nom)
    Correlated Color Temperature (Nom)
    4000 K
    Luminous Efficacy (Rated) (Min)
    80 lm/W
    Luminous Efficacy (rated) (Nom)
    90 lm/W
    Color Rendering Index (Nom)
    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
    Cap-Base Information
    Brass  [ Brass Cap]
    Bulb Material
    Hard Glass
    Bulb Shape
    ED28  [ ED28]
    Approval and application
    Energy Saving Product
    Not Applicable
    Mercury (Hg) Content (Max)
    52.0 mg
    Luminaire design requirements
    Bulb Temperature (Max)
    752 °F
    Cap-Base Temperature (Max)
    482 °F
    Cap-Base Temperature (Max)-DUP(do not use)
    482 °F
    Product data
    Order product name
    MH400/U/ED28 12PK
    EAN/UPC - Product
    Order code
    Numerator - Quantity Per Pack
    Local code description
    MH400/U/ED28 12PK
    Numerator - Packs per outer box
    Material Nr. (12NC)
    Net Weight (Piece)
    0.002 lb

    Eco passport - Our environmental product specifications overview

    Philips cares about the environment and society at large, and strongly supports eco-design of products.

    Installation Diagrams
    E26, E39 ED17, ED28
    E26, E39 ED17, ED28
    OpPos_any.eps-Operating position
    OpPos_any.eps-Operating position
    Green Data

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