PHILIPS 400W Metal Halide | 3900K Cool White | E39 Mogul Base | ED37 Clear

Philips 400W ED37 Clear Metal Halide lamps are high-intensity discharge (HID) solutions engineered for maximum lumen output and industrial-grade reliability. Delivering a crisp 3900K cool white light, this 400W lamp features an industry-leading 120 lm/W efficiency rating, providing 25% higher output compared to standard MH lamps. Its universal burn position allows for total installation flexibility, while the UV-block hard glass envelope ensures durability in high-heat environments. Designed for use with ANSI M59/S ballasts, this lamp is the professional choice for high-bay warehouse lighting, factory floors, and large-scale commercial security systems where brightness and safety are paramount.

Product Overview

The Philips Industrial ED37 series provides powerful, high-efficacy illumination designed to cut through the vast spaces of distribution centers and manufacturing plants. By utilizing high-quality clear hard glass and a heavy-duty brass E39 mogul base, this lamp maintains superior electrical contact and structural integrity over its 20,000-hour life. The pulse-start optimized warm-up and restrike times are 50% faster than standard MH equivalents, ensuring your facility regains full brightness quickly after a power interruption. Compliant with FDA 21 CFR 1040.30 safety standards, it combines professional-grade performance with essential UV-blocking protection.

• Enhanced Luminous Efficacy: 120 lumens per watt delivers exceptional brightness while managing energy consumption across large installations.
• Superior Maintenance: Engineered to retain higher light levels throughout its lifespan, reducing the need for premature relamping.
• Rugged Construction: UV-block hard glass envelope protects workers and materials while withstanding the vibrations of industrial machinery.
• Universal Burning: Optimized for peak performance in any orientation, making it compatible with both vertical downlights and horizontal floodlights.

Technical Specifications

• Brand: Philips Industrial Lighting
• Wattage: 400W
• ANSI Code: M59/S
• Base Type: E39 Mogul Screw (Brass)
• Bulb Shape: ED37 Clear
• Color Temperature: 3900K (Cool White)
• Color Rendering Index (CRI): 65
• Efficiency: 120 lm/W
• Rated Life: 20,000 Hours
• Fixture Rating: Enclosed Fixtures Only
• Burn Position: Universal

Important Safety & Installation Guide

• Enclosed Fixture Mandatory: This lamp must be used in a fully enclosed fixture with a lens/cover to contain glass fragments in the rare event of a lamp rupture.
• Ballast Compatibility: Must be operated on a dedicated ANSI M59 compliant ballast. Operating on an incorrect ballast will cause arc tube failure and safety risks.
• UV Warning: If the outer glass envelope is broken or punctured, the lamp may continue to operate but will emit intense UV radiation. Discontinue use immediately if damaged.
• Relamping: For maximum safety, turn off power and allow the lamp to cool completely before replacement. Professional installation is recommended.

Primary Applications

• Manufacturing & Logistics: Warehouse high-bays, factory assembly lines, and distribution centers.
• Outdoor Security: Parking lot poles, perimeter wall packs, and loading dock floodlights.
• Commercial Areas: High-ceiling retail spaces and athletic facilities.