Philips 15725-5 C200S66/ALTO NC 200W E39 HPS Lamp

Product Overview

Philips 15725-5 C200S66/ALTO NC — 200W Ceramalux ALTO Non-Cycling (NC) High Pressure Sodium Lamp, E39 Mogul Screw Base

The Philips 15725-5 C200S66/ALTO NC is a 200W Ceramalux ALTO Non-Cycling (NC) High Pressure Sodium (HPS) lamp from Philips Lighting, designed for outdoor area lighting, street lighting, and industrial high-bay applications. With a E39 Mogul Screw base, ED-18 bulb shape, ANSI code S66, and universal burn position, this lamp delivers 22,000 initial lumens and a 40,000-hour rated life. Verify wattage, ANSI code, base type, and ballast compatibility before ordering — HPS lamps require an HPS-rated ballast and ignitor.

Wattage

200W

HPS / HID

Lumens

22,000 lm

Initial Output

Color Temp

2100K

Warm Amber

Base

E39

E39 Mogul Screw

Rated Life

40,000 hrs

Average Life

Technical Specifications

SKU	PHLB157255
Brand	Philips Lighting
Philips Product Number	15725-5
Series	Philips Ceramalux ALTO Non-Cycling (NC) — High Pressure Sodium
Lamp Type	High Pressure Sodium (HPS) — Non-Cycling (NC), ALTO Lamp Technology
Ordering Code	C200S66/ALTO NC
Bulb Shape	ED-18
Wattage	200W
Initial Lumens	22,000 lm
Mean Lumens	19,800 lm
CRI	~Not specified by manufacturer for the NC line
Color Temperature	2100K Warm Amber
Base Type	E39 Mogul Screw
ANSI Code	S66
Burn / Operating Position	Universal
LCL (Light Center Length)	5¾″
MOL (Max Overall Length)	9¾″
Rated Average Life	40,000 hours
Standard Package Quantity	12 per case
UPC / EAN	46677157258

Product Overview

The Philips 15725-5 C200S66/ALTO NC is a 200W Ceramalux ALTO Non-Cycling (NC) HPS lamp engineered for high-output outdoor and industrial lighting. It delivers 22,000 initial lumens (19,800 mean lumens at 40% of rated life), suited for street and roadway lighting, parking lots, garages, warehouses, and manufacturing facilities where reduced relamping trips matter. The 2100K warm amber output is characteristic of High Pressure Sodium technology.

The ED-18 bulb shape and E39 Mogul Screw base make this a direct replacement in fixtures previously housing a standard 200W HPS lamp with ANSI code S66. Universal burn position allows installation in any orientation. Rated average life is 40,000 hours. This lamp contains mercury and must be recycled per applicable regulations.

Non-Cycling (NC) technology: Unlike a standard HPS lamp nearing end of life, which cycles on and off, this lamp goes out and stays out at end of life — eliminating unnecessary service trips. It uses up to 90% less mercury than standard Philips Ceramalux HPS lamps, is lead-free, and passes the US EPA’s TCLP test for non-hazardous waste. Operates on standard HPS ballasts of similar wattage with 90% lumen maintenance.

Compatible Applications

Street and roadway lighting — Where non-cycling behavior (lamp goes out and stays out, rather than cycling on/off) simplifies maintenance.
Parking lots, garages, warehouses, and manufacturing facilities — Direct replacement for standard HPS lamps of similar wattage, with 25% longer rated life.
Retrofit and maintenance replacement — Direct replacement for existing 200W HPS lamps with E39 Mogul Screw base and S66 ANSI code. Verify ballast compatibility before ordering.

Before Ordering — Verify

ANSI / Lamp Code: Confirm the existing lamp or equipment manual matches S66.
Wattage: Confirm the fixture is rated for 200W.
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 ED-18 bulb shape, LCL 5¾″, MOL 9¾″, 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.
Fixture Design: Do not use this lamp in a fixture that redirects a substantial portion of energy toward the arc tube and its immediate vicinity, as this may lead to early lamp failure.
Approved Fixtures Only: Install only in fixtures rated for the listed lamp type, wattage, and operating position. The fixture wattage rating must match the wattage on the outer glass bulb.
Handling: Do not scratch the outer bulb or subject it to pressure — this could cause the outer bulb to crack or shatter. Replace the lamp if the outer glass bulb has been scratched, cracked, or damaged in any way.
If Broken: If the outer glass bulb is broken, shut off power immediately and remove the lamp after it has cooled. If the arc tube is broken, avoid skin contact with its contents or fragments.
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.