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250 Watt ED18 Philips High Pressure Sodium Non-Cycling Alto Lamp
250 Watt ED18 Philips High Pressure Sodium Non-Cycling Alto Lamp
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Manufacturer: Philips Lighting
Product Number: 147439
SKU Number: 0596632

General Description: This Philips High Pressure Sodium 250 watt light bulb has a non-cycling technology to help reduce long-term maintenance cost because it will fail to off when it is at its end of life. It can be used were any traditional 250 watt high pressure sodium ED18 light is used.  You will no longer have to wait for a light to cycle to confirm it needs replacement. This lamp has a 30,000 hour average rated life and provides 28,500 initial lumens. This high pressure sodium light bulb has Philips Alto technology making it environmentally friendly (only contains 7.3 mg of mercury).

  250 Watt Philips Non-Cycling HPS Mogul Base Lamp

Product Specifications

Manufacturer Philips Lighting
Product Number 147439
Voltage 100 Volt
Watts 250
Beam Angle 360°
Base Type Mogul (E39)
Bulb Style ED18
Length 9.75 Inches
Diameter 2.25 Inches
Lumens 28,500
Color Rendering Index (CRI) 21
Color Temperature  2100K
Rated Average Life 30,000 Hours
Energy Star Qualified No
Dimmable No
Full Product Name HPS 250W S50 E39 ED18 ALTO NC
Ordering Code C250S50 NC
Case Quantity 12
Technology High Pressure Sodium (HID)
Alternate Product Number 14743-9
Specification Sheet

Features & Benefits

• Not Dimmable
• Non-cycling at end of life save starter and ballast
• Has mogul screw in base (E39)
• 2100K color temperature (very yellow light)
• Produces 28,500 lumens


• Ideal for use in parking lots, garages and industrial applications.

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