Sylvania 64472 M175/C/U

The Sylvania 64472 M175/C/U Metalarc Lamp is a high-performance, 175-watt high-intensity discharge (HID) quartz metal halide bulb engineered for demanding commercial, industrial, and outdoor area lighting applications. Featuring a phosphor-coated, diffuse ED28 glass envelope, this lamp outputs 15,000 initial lumens of soft 3800K cool white light while cutting directional glare. Built with an industry-standard E39 mogul screw base and a reliable 10,000-hour rated service life, it operates efficiently across a flexible, universal burning orientation.

ADL Supply Expert Application & Replacement Guide

The Sylvania Metalarc M175/C/U is a time-tested commercial component frequently deployed in low-to-mid bay warehouse troffers, localized industrial production facilities, parking lot area shoeboxes, and public exterior wall packs. Because this bulb features an internal white diffuse phosphor layer, it scatters the intense arc point. This significantly cuts raw glare in low-ceiling settings, preventing blind spots for forklift operators and property pedestrians while casting a more balanced, uniform daylight illumination pattern.

Technical Enclosure and Circuit Guidelines: This quartz metal halide module carries an ANSI Enclosed-Fixture Rating (M57/E). Lacking an internal secondary shield, safety guidelines mandate its operation exclusively within fully enclosed luminaires fitted with structurally certified, tempered glass lenses. Maintenance personnel must verify their system gear utilizes a standard **ANSI M57 probe-start ballast**. Thanks to its integrated universal ("/U") burning parameters, this ED28 module fires reliably at any vertical or horizontal tilt angle without dropping lumen output or causing voltage destabilization.

Detailed Product Specifications

• Brand: Sylvania
• Product Series Line: Metalarc HID Quartz Metal Halide
• Sylvania Order Code SKU: 64472
• Manufacturer Part Number: M175/C/U (M175CU)
• UPC Barcode: 46135644726
• Industry ANSI Ballast Standard: M57/E (Enclosed Luminaire Required)
• Start Circuit Style: Traditional Probe-Start Integration
• Operational Wattage: 175 Watts
• Initial Luminous Flux: 15,000 Lumens
• Mean Luminous Flux: 10,000 Lumens
• Color Temperature Configuration: 3800K (Diffuse Cool White Spectrum)
• Color Rendering Index (CRI): 70
• Bulb Shape Profile: Coated / Phosphor-Diffuse ED28 (Ellipsoidal Dimpled)
• Base Configuration: E39 Mogul Screw Base
• Maximum Overall Length (MOL): 8.31" Inches (211mm)
• Bulb Nominal Diameter: 3.5" Inches (89mm)
• Rated Average Lifespan: 10,000 Hours
• Burning Position Parameters: Universal (Supports All-Angle Positioning)

Operation, Safety & Mounting Compliance

Warm-Up, Restrike, and Operational Delays

Following a cold startup, this high-intensity discharge lamp requires an initialization window of 5 to 10 minutes to fully vaporize internal gas compounds and stabilize its core current parameters. In the event of an unexpected voltage sag or localized power drop, a hot restrike safety delay of 7 to 12 minutes must be observed. This allows internal operating pressures to equalize before the standard probe-start ballast can safely reignite the lamp arc path.

Ultraviolet Exposure Warnings

This optical HID source generates shortwave ultraviolet (UV) radiation during active operation. Never operate this lamp if the outer diffuse ED28 glass envelope becomes scratched, cracked, fractured, or broken. Operating a compromised bulb introduces severe hazards, including acute skin tissue burns and severe eye irritation from raw, unfiltered UV leakage. Always isolate lines and allow a 20-minute cool-down window before executing maintenance procedures. Handle components exclusively with a clean cloth or gloves to avoid depositing skin oils that create localized thermal hotspots.

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume logistics management, tiered commercial contractor pricing models, and full pallet project quotes for facility teams, municipal procurement agents, and electrical accounts nationwide.

For professional contractor tiered discounts, full pallet freight distributions, or dedicated technical submittal specification sheets, reach our support center directly at 1-800-235-3489. We are your commercial supply partners as a dedicated wholesale Lighting Distributor In Doral, Florida.