Philips 30347-9 C150S55/M

Product Overview

Philips 303479 C150S55/M — 150W High Pressure Sodium Lamp, E26 Medium Base

The Philips 303479 C150S55/M is a 150-watt Ceramalux High Pressure Sodium (HPS) lamp from Philips Lighting, designed for outdoor area lighting, street lighting, and industrial applications. With an E26 Medium Screw base, BD17 bulb shape, ANSI code S55, and universal burn position, this lamp delivers 16,000 initial lumens and a 24,000-hour rated life. Verify wattage, ANSI code, base type, and ballast compatibility before ordering — HPS lamps require an HPS-rated ballast and ignitor.

Wattage

150W

HPS / HID

Lumens

16,000 lm

Initial Output

Color Temp

2100K

Warm Amber

Base

E26

Medium Screw

Rated Life

24,000 hrs

Average Life

Technical Specifications

SKU	PHLB303479
Brand	Philips Ceramalux
Manufacturer Part Number	CERAMALUX-C150S55M
Philips Order Code	303479
Model	C150S55/M
Series	Philips Ceramalux — High Pressure Sodium
Lamp Type	High Pressure Sodium (HPS) — Ceramalux
Bulb Shape	BD17
Wattage	150W
Initial Lumens	16,000 lm
CRI	21
Color Temperature	2100K Warm Amber
Base Type	E26 Medium Screw
ANSI Code	S55
Burn / Operating Position	Universal
Rated Average Life	24,000 hours
Max Overall Length (MOL)	5.44"
Bulb Diameter	2.12"
UPC / EAN	46677303471

Product Overview

The Philips 303479 C150S55/M is a professional-grade HPS replacement lamp engineered for outdoor and industrial lighting. At 150 watts, it delivers 16,000 initial lumens — strong efficacy for street, parking, and perimeter lighting as well as warehouse and industrial high-bay fixtures. The warm amber 2100K output is characteristic of High Pressure Sodium technology and is well suited for applications where visibility and energy efficiency take priority over color accuracy.

The BD17 bulb shape and E26 Medium Screw base make this a direct replacement in fixtures previously housing a standard 150W HPS lamp with ANSI code S55. At 5.44" MOL and 2.12" diameter, this is a compact form factor — verify fixture clearance before ordering. Universal burn position allows installation in any orientation. This lamp contains mercury and must be recycled per applicable regulations.

Not recommended for: retail displays, color-critical inspection environments, sports venues, or any application requiring CRI above ~21.

Compatible Applications

Outdoor area and street lighting — Roadways, parking lots, municipal streetlights, and perimeter security lighting.
Industrial and commercial applications — Warehouses, manufacturing facilities, and large indoor/outdoor commercial fixtures.
Retrofit and maintenance replacement — Direct replacement for existing 150W HPS lamps with E26 base and S55 ANSI code. Verify ballast compatibility before ordering.

Before Ordering — Verify

ANSI / Lamp Code: Confirm the existing lamp or equipment manual matches S55.
Wattage: Confirm the fixture is rated for 150W.
Base Type: Confirm the socket matches E26 Medium Screw.
Ballast Compatibility: This lamp requires an HPS-rated ballast and ignitor. It will not operate on a Metal Halide or Mercury Vapor ballast.
Burn Position: Fixture supports Universal operation — no restriction.
Physical Fit: Confirm BD17 bulb shape, 5.44" MOL, 2.12" diameter, and fixture clearance against the existing lamp or fixture manual.

Safety and Handling Guidelines

Correct Ballast Required: Use only with an HPS-compatible ballast and ignitor rated for this lamp. Using an incompatible ballast can result in lamp failure or fixture damage.
High-Pressure Arc Tube: HPS lamps operate under high internal pressure. Always use appropriate eye protection when handling or replacing lamps. Allow lamps to cool fully before removal.
Warm-Up / Restrike Time: HID lamps require a warm-up period to reach full output. After a power interruption, allow the lamp to cool before restarting — a hot restrike attempt can damage the lamp or ballast.
Approved Fixtures Only: Install only in fixtures rated for the listed lamp type, wattage, and operating position.
Mercury Content: Contains mercury. Do not dispose of in regular trash. Recycle through an approved lamp recycling program in accordance with federal, state, and local regulations.

Compliance

Contains mercury — subject to applicable lamp recycling and disposal regulations. California, Washington, and other states may have mandatory take-back or handling fee requirements.
Verify RoHS compliance status, UL listing, Title 20, and Prop 65 requirements with the Philips manufacturer specification sheet prior to use in regulated installations.