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Clear ED18 high-pressure sodium bulb with mogul screw base

GE Lighting

GE Lighting LU400/H/ECO 400 W High Pressure Sodium standard bulb

SKU CH-W8CW-XNH8G

High pressure sodium lamp delivers 51,000 lumens at 2100K with a 24,000 hour rated life

  • TypeLight Bulbs
  • ColorTransparent
  • High Pressure Sodium technology delivers 51,000 lumens for intense area lighting
  • 24,000-hour rated life reduces replacement frequency in hard-to-reach fixtures
  • Universal burning position allows installation in any orientation
  • Mogul screw E39 base fits standard industrial and outdoor sockets
  • Clear ED18 glass envelope maintains consistent output throughout rated life

400 W High-Pressure Sodium Lamp

This 400 W high-pressure sodium lamp delivers 51,000 lumens at a warm 2100 K colour temperature. It fits mogul screw E39 bases and carries ANSI code S51 for compatible ballasts. The ED18 glass envelope measures 2 1/4 in diameter and 9 3/4 in overall length. It is rated for 24,000 hours of universal burning position operation.

Ballast-Dependent Voltage Limits

The lamp requires a matching S51 ballast because its voltage is ballast dependent and cannot connect directly to mains supply. It is not dimmable and must operate inside an enclosed fixture for safety. The low colour rendering index of 22 restricts use to applications where colour accuracy is not required. Universal burning position allows any mounting orientation without performance loss.

Clear Glass Envelope Construction

The clear glass and metal housing is not shatter resistant, so careful handling and a protective fixture lens are necessary. Mogul screw E39 base provides secure electrical contact in standard industrial sockets. Rated life of 24,000 hours reduces relamping frequency in high-bay or streetlighting installations. Transparent finish maintains full lumen output throughout the rated lifetime.

Highlights

  • High Pressure Sodium technology delivers 51,000 lumens for intense area lighting
  • 24,000-hour rated life reduces replacement frequency in hard-to-reach fixtures
  • Universal burning position allows installation in any orientation
  • Mogul screw E39 base fits standard industrial and outdoor sockets
  • Clear ED18 glass envelope maintains consistent output throughout rated life

Specifications

BrandGE LIGHTING
TypeLight Bulbs
ColorTransparent

Questions about this item

Should I pick this 400 W ED18 bulb or a different wattage for my mogul-base fixture?

Choose the 400 W ED18 when your ballast is rated for 400 W and the fixture accepts a 9 3/4 in overall length with a 2 1/4 in diameter.

What does the 51,000 lm output mean for actual illumination?

It delivers 51,000 lumens at 2100 K with a CRI of 22, giving strong golden light suited to street, area or high-bay use where colour accuracy is not critical.

How does the ANSI S51 code limit the ballast I can use?

ANSI S51 means the lamp must run on a ballast specifically rated for 400 W high-pressure sodium S51; using any other ballast type will prevent proper starting and shorten the 24,000 hr rated life.

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