
GE
GE 42729 MVR250/U(Pro) Metal Halide Lamp Mogul
250 watts of high-CRI metal halide output in the ED28 form factor — the workhorse HID source for high-bay commercial and industrial illumination demanding consistent color rendering over a 6,000-hour rated life.
$36.28*
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Overview
Key Features
250-Watt Light Bulb
Rated Life of 6,000-Hours
Multi-Vapor Quartz Metal Halide Mogul Light Bulb
MVR250/U/ED28
MVR250/U
Specifications
Wattage
250W
Lamp Type
Multi-Vapor Quartz Metal Halide
Bulb Shape
ED28
Base Type
Mogul (E39)
Rated Life
6,000 hours
Model
MVR250/U
GE Stock Number
42729
Frequently Asked Questions
What color temperature does the GE MVR250/U produce, and what does that mean for color rendering?
The MVR250/U (Multi-Vapor) metal halide lamp produces a daylight-adjacent color temperature typically in the 4,000–4,200K range with good color rendering for an HID source. Metal halide's CRI is generally in the 65–85 range depending on the specific phosphor blend — significantly better than high-pressure sodium for environments where accurate color discrimination matters, such as retail, industrial inspection, or sports facilities.
What ballast is required to operate the MVR250/U?
This lamp requires a compatible 250-watt metal halide ballast — either magnetic (reactor or auto-transformer type) or electronic, rated for ED28 mogul-base lamps. The specific ballast type (probe-start vs. pulse-start) must match the lamp's design; verify ballast compatibility before installation, as mismatched ballasts reduce lamp life and can prevent ignition.
How long does the MVR250/U take to reach full output after striking, and can it be re-struck when hot?
Metal halide lamps require a warm-up period of approximately 2–5 minutes to reach full lumen output from a cold start. Hot re-strike is not possible — after extinguishing, the lamp must cool for 5–20 minutes before it will reliably re-ignite. This makes it unsuitable for applications requiring instant-on or frequent switching cycles.
What is the lumen depreciation profile over the 6,000-hour rated life?
Metal halide lamps depreciate meaningfully over their rated life — initial lumens can drop 20–30% by end of rated life. The 6,000-hour rating reflects the point at which the lamp reaches a standardized lumen maintenance threshold, not total failure. Factor lamp replacement into maintenance cycles before visible output degradation affects the application.
What applications is the ED28 mogul base format appropriate for?
The ED28 (elliptical, 28/8-inch diameter) bulb shape with mogul (E39) base is the standard format for 250W commercial fixtures — industrial high-bay luminaires, commercial area lighting, sports facility fixtures, and warehouse applications. It is not designed for film or photographic studio use.