Philips 467373 SON 400W E39 HPS

Product Overview

Philips 467373 SON 400W — 400W High Pressure Sodium Lamp, E39 Mogul Base

The Philips 467373 SON 400W is a 400-watt SON High Pressure Sodium (HPS) lamp from Philips Lighting, designed for outdoor area lighting, street lighting, and industrial high-bay applications. With an E39 Mogul Screw base, ED18 bulb shape, ANSI code S51, and universal burn position, this lamp delivers 50,000 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

400W

HPS / HID

Lumens

50,000 lm

Initial Output

Color Temp

2100K

Warm Amber

Base

E39

Mogul Screw

Rated Life

24,000 hrs

Average Life

Technical Specifications

SKU	PLB467373
Brand	Philips Lighting
Philips Order Code	467373
Series	Philips SON — High Pressure Sodium
Lamp Type	High Pressure Sodium (HPS) — SON
Bulb Shape	ED18
Wattage	400W
Initial Lumens	50,000 lm
CRI	~22
Color Temperature	2100K Warm Amber
Base Type	E39 Mogul Screw
ANSI Code	S51
Burn / Operating Position	Universal
Rated Average Life	24,000 hours
UPC / EAN	046677467371

Product Overview

The Philips 467373 SON 400W is a professional-grade HPS replacement lamp engineered for high-output outdoor and industrial lighting. At 400 watts, it delivers 50,000 initial lumens — strong efficacy for large-area 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 ED18 bulb shape and E39 Mogul Screw base make this a direct replacement in fixtures previously housing a standard 400W HPS lamp with ANSI code S51. 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 ~22.

Compatible Applications

Outdoor area and street lighting — Roadways, parking lots, municipal streetlights, and perimeter security lighting.
Industrial and commercial high-bay — Warehouses, manufacturing facilities, and large indoor/outdoor commercial fixtures.
Retrofit and maintenance replacement — Direct replacement for existing 400W HPS lamps with E39 base and S51 ANSI code. Verify ballast compatibility before ordering.

Before Ordering — Verify

ANSI / Lamp Code: Confirm the existing lamp or equipment manual matches S51.
Wattage: Confirm the fixture is rated for 400W.
Base Type: Confirm the socket matches E39 Mogul 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 ED18 bulb shape, length, 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.