Philips C150S55/Alto E39 150W HPS Lamp – 150W Ceramalux High Pressure Sodium HID Lamp

Specifications

• Brand: Philips
• SKU: PHLB-368746
• Lamp Type: Ceramalux High Pressure Sodium
• ANSI Code: -
• UPC: —
• Wattage: 150W
• Voltage: 55V
• Bulb Shape: ED23½  
• Base Type: E39
• Color Temperature: 2100K
• CRI: 21
• Initial Lumens: 16,000 lm (Nominal)
• Mean Lumens: —
• Rated Average Life: 15000 hours
• Max Overall Length (MOL): —
• Bulb Diameter (DIA): —
• Burn Position: Universal

Compatible Applications

• Street & Roadway Lighting
• Parking & Area Lighting
• Industrial & Warehouse Lighting

About Philips High Pressure Sodium Lamps

Philips Ceramalux High Pressure Sodium lamps deliver superior lumen maintenance, long rated life, and consistent color throughout lamp life. The ALTO and NC series are manufactured without mercury for environmentally responsible disposal.

Important Safety & Installation Notes

• High Pressure Warning: HPS lamps operate under high internal pressure. Always wear face shield and gloves during handling and installation.
• Correct Ballast Required: Must be operated on an ANSI-coded ballast matching the lamp wattage and type. Incorrect ballast will cause lamp failure or create a safety hazard.
• No Bare Hands: Never touch the outer envelope with bare skin. Oils cause hot spots. Use clean gloves or a lint-free cloth.
• Warm-Up Time: HPS lamps require a warm-up period to reach full output. Allow 3–5 minutes after ignition before assessing lumen output.
• Hot Restart: HPS lamps cannot be instantly restarted when hot. Allow the lamp to cool for several minutes before restriking after a power interruption.
• Burn Position: Use only in the rated burn position. Incorrect orientation may shorten lamp life or cause arc tube failure.