PHILIPS 150W Ceramalux C150S55/ALTO 2100K | High Pressure Sodium HID | E39 Mogul Base

Philips Ceramalux C150S55/ALTO is a high-efficiency 150W High Pressure Sodium (HPS) lamp designed for industrial and outdoor applications. Combining 16,000 lumens of dependable output with ALTO low-mercury technology, it provides a cost-effective solution for large-scale area lighting.

Product Overview

Philips Ceramalux lamps are an industry standard for roadway and industrial lighting where long life and high efficiency are paramount. The C150S55 model features the ED23.5 bulb shape and a mogul screw base, delivering a warm golden light that effectively cuts through fog and darkness. Utilizing ALTO technology, these lamps meet EPA TCLP standards for non-hazardous waste, making them an environmentally responsible choice for municipal and industrial facilities.

• High Efficacy: Delivers approximately 106 lumens per watt, providing high-intensity light for parking lots and warehouses while keeping energy costs manageable.
• ALTO® Environmentally Responsible: Manufactured with reduced mercury content, helping facilities meet sustainability goals and simplify disposal processes.
• Superior Lumen Maintenance: Engineered to maintain consistent light levels throughout the 24,000-hour rated life of the lamp.
• Universal Burn Position: Designed to operate in any orientation, offering maximum flexibility for various fixture types and mounting angles.

Technical Specifications

• Brand: Philips
• Model: Ceramalux C150S55/ALTO
• Order Code: 368746
• Wattage: 150W
• Operating Voltage: 55V (Lamp Voltage)
• ANSI Code: S55
• Base Type: E39 (Mogul Screw)
• Bulb Shape: ED23.5
• Initial Lumens: 16,000 lm
• Color Temperature: 2100K
• CRI: 21
• Rated Average Life: 24,000+ hours
• Dimensions (MOL): 7.75 inches (197 mm)
• Diameter (DIA): 2.94 inches (75 mm)

Before You Order

• Ballast Specificity: This lamp requires an S55 ANSI coded ballast. Using an incorrect ballast will lead to poor performance, shortened lamp life, or potential fixture damage.
• Base Verification: Features a large E39 Mogul base. This is larger than standard residential screw-in bases; ensure your fixture is designed for mogul-sized lamps.
• Light Quality: HPS lamps produce a distinct warm amber light (2100K) with a low CRI. While excellent for visibility in outdoor areas, it is not recommended for tasks requiring high color accuracy.
• Cycle Times: Requires a 3–5 minute warm-up time to reach full brightness and a cool-down period before restriking if power is interrupted.

Additional Information

Philips Ceramalux High Pressure Sodium lamps are widely utilized in street lighting, parking garages, and high-bay industrial settings. While HPS remains a dependable legacy technology, LED HID retrofits are also available for facilities looking to further reduce maintenance and energy consumption. For immediate replacement in existing S55 systems, the Ceramalux ALTO series provides the perfect balance of performance and environmental compliance.