Osram LU250/ECO 250W High Pressure Sodium Hps Lamp T14.5

Product Description

The OSRAM LU250/ECO is a 250-watt high pressure sodium (HPS) lamp designed for commercial and industrial lighting applications. Built to the T14.5 shape designation with an E39 mogul base, it delivers an initial output of 26,000 lumens and a mean output of 24,400 lumens at a correlated color temperature of 2100 K. The lamp carries an ANSI code of S50/O, making it compatible with standard S50-rated HPS ballasts. Rated for 30,000 hours of service life and engineered as a lead-free design, the LU250/ECO is intended for installation by licensed electricians and qualified lighting maintenance technicians in high-demand fixture environments.

This lamp is suited for a wide range of commercial and industrial applications including high bay and low bay industrial fixtures, architectural and canopy lighting, floodlights, roadway cobra head fixtures, and wall mount luminaires. Its universal operating position allows installation at any burning angle without performance penalty. The clear color finish and 9.75-inch overall length are consistent with standard retrofit and replacement scenarios in existing HPS fixture housings.

Key Features

• Lead-free construction — may reduce disposal costs and supports compliance with TCLP testing requirements
• Direct replacement for standard HPS lamps that do not pass the federal TCLP test
• 26,000 initial lumens and 24,400 mean lumens for consistent output over rated life
• 30,000-hour rated life reduces relamp frequency in high-bay and roadway applications
• Universal burning position — no orientation restriction during installation
• Hot restrike time of 1 minute and warm-up time of 3 to 4 minutes — standard for HPS source type

Compatibility

Compatible with ANSI S50/O-rated HPS ballasts. Suitable for architectural, canopy, floodlight, high bay, industrial, low bay, and roadway cobra head and wall mount fixtures accepting an E39 mogul base and a 250-watt HPS source.

Installation Notes

Installation should be performed by a licensed electrician or qualified lighting maintenance technician. De-energize the fixture and allow the existing lamp to cool fully before handling, as HPS lamps operate at high internal pressure and elevated surface temperatures. The E39 mogul base must be fully seated and locked into the socket before re-energizing. Verify that the existing ballast carries the ANSI S50/O rating before installing this lamp; mismatched ballasts will affect lamp performance and life.

Technical Specifications

• Lamp Type: High Pressure Sodium
• Wattage: 250 watts
• Initial Lumens: 26,000 lumens
• Mean Lumens: 24,400 lumens
• Color Temperature: 2100 K
• Color Rendering Index (CRI): 22
• ANSI Code / Ballast: S50/O
• Base Type: E39 Mogul
• Shape Designation: T14.5
• Color: Clear
• Voltage Rating: 100 volts
• Overall Length: 9.75 inches
• Overall Diameter: 2.244 inches
• Arc Size: 2.74 inches
• Operating Position: Universal
• Rated Life: 30,000 hours
• Warm-Up Time: 3 to 4 minutes
• Hot Restrike Time: 1 minute
• Standard Package: 20 per case, 1 per pack

Standard Information

• Brand: OSRAM
• Manufacturer Part Number: LU250/ECO