400W metal halide lamp with an E40 Goliath screw base and opal elliptical outer bulb. Producing approximately 36,000 lumens of natural daylight 4000K illumination, this HID lamp is ideal for warehouses, factories, workshops, sports facilities, security lighting, and commercial outdoor applications.
What it is
The 400W E40 Elliptical Metal Halide Lamp is a high-intensity discharge (HID) lamp designed to deliver bright, natural daylight illumination with excellent colour rendering for commercial, industrial, and outdoor lighting applications.
Its opal elliptical outer bulb provides soft, even light distribution, while the E40 Goliath Screw base allows installation into compatible metal halide luminaires. Producing approximately 36,000 lumens at 4000K, this lamp delivers crisp, natural white light with significantly better colour rendering than high-pressure sodium lamps, making it ideal for applications where visibility and colour recognition are essential.
Unlike self-ballasted lamps, this metal halide lamp requires compatible HID control gear, including a ballast and ignitor, for safe and correct operation.
Use Cases / Applications
Ideal for commercial, industrial, and outdoor lighting applications, including:
- Warehouses
- Workshops
- Factory interiors
- Sports facilities
- Exhibition halls
- Security lighting
- Industrial yards
- Commercial buildings
- Agricultural buildings
- Loading bays
- High-bay lighting
- Existing luminaires designed for 400W E40 Metal Halide lamps
Key Benefits
- Produces approximately 36,000 lumens
- Natural daylight 4000K illumination
- Excellent colour rendering (CRI approximately 65)
- Long rated life of approximately 15,000 hours
- Opal elliptical bulb provides soft, even light distribution
- E40 Goliath Screw base suits compatible metal halide luminaires
- Excellent replacement for commercial and industrial installations
- Ideal where colour recognition and visibility are important
Metal halide lamps generate light through an electrical discharge inside a metal halide arc tube. Compared to high-pressure sodium lamps, they produce a whiter, more natural light with significantly improved colour rendering, making them well suited to industrial facilities, sports venues, commercial buildings, and display applications.
Safety Compliance
- Requires compatible 400W metal halide ballast and ignitor
- Must not be connected directly to mains voltage
- Allow sufficient warm-up time before reaching full brightness
- Hot restrike may require a cooling period before restarting
- Install only in luminaires designed for 400W metal halide lamps
- Isolate power before installation or replacement
- Dispose of responsibly through an approved HID lamp recycling programme due to its mercury content
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