Switch Start Metal Halide Standard

MH400/U/ED28 3PK

  • Switch Start Metal Halide Standard

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Specifications Show all

General Information
E39  [ Single Contact Mogul Screw]
Bulb Shape
ED28  [ ED28]
Operating Position
Universal  [ Universal]
Main Application
General Lighting (G)
Life To 50% Failures (Nom)
20000 h
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
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 (CL)
Cap-Base Information
Brass  [ Brass Cap]
Bulb Material
Hard Glass
Approval and Application
Energy Saving Product
Not Applicable
Mercury (Hg) Content (Max)
52.0 mg
Luminaire Design Requirements
Bulb Temperature (Max)
400 °C
Cap-Base Temperature (Max)
250 °C
Product Data
Order product name
MH400/U/ED28 3PK
EAN/UPC - Product
Order code
Numerator - Quantity Per Pack
Numerator - Packs per outer box
Material Nr. (12NC)
Net Weight (Piece)
0.001 kg

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

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