250 W HQI-T Clear Metal Halide Lamp, GES/E40 Tubular Enclosed Fitting, 20000 lm, 12000h

  • RS Stock No. 743-460
  • Mfr. Part No. H250D
  • Manufacturer Osram
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): SK
Product Details


Single-ended, clear tubular 'Powerstar®' Lamps
Suitable for low bay lighting in fittings with ignitor/starter circuits


These lamps require 2 to 10 minutes to cool before re-striking, but shorter times are possible if installed in fittings with high voltage ignitor circuits.
Care must be taken NOT to touch the glass surface of the lamp during installation.

Ledvance Powerstar® HQ-I® Metal Halide Lamp, GES/E40 Base

Introducing the Ledvance Powerstar® HQ-I® 250 W metal halide lamp, which produces a high lumen output of 20,000 lm. The clear tubular lamp has an E40 screw base, providing a quick fitment and replacement. Excellent colour rendering of 90 ensures this lamp is great for environments you need good colour identification. A UV filter prevents the discolouration of items when using this lamp. The Powerstar® HQ-I® has a long average lifetime of 12,000 hours, making them economical and reducing the maintenance costs for the future.

Features and Benefits

Saving up to 30% compared to normal lamps

Excellent colour rendering index

E40 Screw base

Luminosity output of 20,000 lumens

12,000 hour lifetime

Single Ended Tubular Design

The UV filter on the lamp complies with the requirements of IEC 61167

Typical Applications

Mainly used in large areas for powerful lighting:




Construction Areas

Outdoor Events


Can Metal Halide lamps be used outdoors?

Yes, the surrounding temperatures don't really have any impact on how the lamp performs, making it very versatile.

Are Metal Halide lamps more economical than incadescent lamps?

Yes, compared to incandescent bulbs and other older technologies, metal halide bulbs use less energy, whilst offering a luminous efficiency. Metal Halide lamps can last up to 10 times longer than traditional incandescent lamps.

Metal Halide

These lamps produce a clear white light and are suitable for display or floodlighting, where the heat output from tungsten halogen lamps would create a problem. Metal Halide Lamps have an efficiency approx. 4 times higher than halogen lamps and xenon lamps. In addition, the short-arc type is similar to a point light source, making optical design easy. As their colour temperature characteristics are similar to daylight colour, exact colours (RGB) can be reproduced. They can also be used for both high bay and low bay applications.,Compared to High Pressure Mercury lamps, Metal Halide lamps offer greater efficiencies and, compared to high pressure sodium (SON) lamps, they have similar advantages, but have different output characteristics. A disadvantage of metal halide lamps, when compared to SON lamps, is that they have a shorter service life.

Attribute Value
Wattage 250 W
Lamp Type HQI-T
Lamp Base GES/E40
Lamp Shape Tubular
Fitting Type Enclosed
Mounting Orientation Universal
Internal Ignitor No
Length 225 mm
Colour Temperature 5200K
Lamp Finish Clear
Colour Rendering 90
Luminosity 20000 lm
Diameter 46mm
Life Hours 12000h
EU Energy Efficiency Rating A
46 In stock for delivery within 4 working days
Price Each
SGD 67.63
(exc. GST)
SGD 72.36
(inc. GST)
Per unit
1 +
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