Sodium lamp Philips Master SON-T PIA Plus E40 150W high-pressure sodium bulb

Philips Master SON-T PIA Plus E40 150W is a high-pressure sodium (HPS) lamp engineered for applications that require high luminous efficacy and extended operational life. The lamp delivers warm amber light characteristic of HPS technology and is built with an E40 screw base to fit standard heavy-duty luminaires used in street lighting, industrial halls and horticultural supplemental installations. The product is intended as a drop-in lighting source for fixtures designed for HPS discharge lamps and operates within the established electrical and thermal limits for that category.

Advantages

The lamp offers high luminous efficacy and long rated life compared with many conventional light sources, which helps reduce lamp replacement frequency and maintenance interventions. Its warm amber output provides good visual contrast and penetration in outdoor environments while consuming 150 watts of electrical power. The standard E40 base ensures compatibility with widely used fixtures and ballasts designed for high-pressure sodium lamps.

Suitable for

• Street and roadway lighting in public and private areas
• Industrial and warehouse lighting where HPS performance is acceptable
• Commercial outdoor luminaires such as parking lots and perimeter security
• Horticultural supplemental lighting where HPS spectral output is preferred

Key specifications

• Rated power: 150 W
• Lamp type: High-pressure sodium (HPS)
• Base type: E40 (screw)
• Light color: Warm amber characteristic of sodium discharge
• Application: Outdoor and industrial fixed luminaires, horticultural supplemental lighting
• Designed for use with appropriate ballast for HPS lamps

How to use

Install the lamp into an E40 lamp holder in a fixture rated for high-pressure sodium lamps. Ensure the fixture includes a compatible ballast and that electrical supply and mounting meet local codes and the fixture manufacturer's instructions. Avoid handling the glass envelope with bare hands; if contaminated, clean with a lint-free cloth and isopropyl alcohol once cooled. Operate the lamp using the correct ballast and allow the lamp to reach stable operating conditions after ignition before assessing light output.

Usage recommendations

For reliable operation, replace the lamp at or before its rated end-of-life in groups for area installations to maintain consistent light levels. Use fixtures with appropriate thermal management and moisture protection where required. For horticultural uses, consider mixing with other spectral sources if broader spectrum is needed for specific growth stages.