Product Overview
Osram HQI-E 400W/N clear POWERSTAR Metal Halide Lamp - 440W E40 Base, 4000K CRI 65, 12000h Rated Life
The Osram HQI-E 400W/N clear is an Osram POWERSTAR HQI quartz metal halide lamp rated at 440W / 120V on a E40 base, with a 4000K color temperature and CRI (Ra) 65. It is rated for 12000 hours average life.
This lamp should be selected by matching the Osram order code, wattage, base type, and light color to the installed fixture or ballast.
Wattage 440W 120V Nominal | Color Temp 4000K CRI 65 (Ra) | Lumens 42000 Nominal Initial | Rated Life 12000 Hours | Base E40 HQI-E |
Product Overview
Osram’s POWERSTAR HQI lamps are quartz metal halide lamps used across commercial, industrial, and display lighting where compact size, high lumen output, and good color rendering are required. Different HQI families (T, BT, TS, E, E/P) vary by bulb shape, base type, and intended fixture/reflector design — always match the exact family and base type to the installed fixture.
Technical Specifications
| Brand | Osram |
| ADL / Order Code (as listed) | OS526700 |
| Osram Lamp Reference | HQI-E 400W/N clear |
| Family | HQI-E |
| ILCOS Code | MC/UB-400/40=46/2B-H-E40-120/285/H45 |
| EAN | 4050300292632 |
| Wattage | 440 W |
| Voltage | 120 V |
| Ignition Voltage (Min/Max) | 3.6/5 kVp |
| Lamp Current | 4 A |
| Nominal Luminous Flux | 42000 lm |
| Luminous Efficacy | 94 lm/W |
| Light Color / Appearance Code | N |
| Color Temperature | 4000 K |
| Color Rendering Index (Ra) | 65 |
| Base | E40 |
| Diameter | 120 mm |
| Maximum Overall Length | 285 mm |
| LCL | 198 mm |
| Burning Position | h45 |
| Average Lamp Life | 12000 hours |
| PF Correction Capacitor (50 Hz) | 45 µF |
| Standard Pack Quantity | 12 |
| Control Gear Type | NAV-VG |
| NIOSH Skin Exposure Limit | > 5.7 |
| ACGIH UV Output | < 1.5 |
| Max. Permissible Outer Bulb Temp. | 500 °C |
| Max. Permissible Pinch/Base Edge Temp. | 250 °C |
| Bulb Finish | Clear |
Alternate Rating by Control Gear — Osram’s catalog publishes this lamp under one EAN with two rated operating points depending on which control gear drives it:
| Control Gear | NAV-VG (as listed above) |
| Wattage | 440 W |
| Voltage | 120 V |
| Lamp Current | 4 A |
| Nominal Luminous Flux | 42000 lm |
| Luminous Efficacy | 94 lm/W |
| Color Temperature | 4000 K |
| CRI (Ra) | 65 |
| Control Gear (alternate) | HQI-VG |
| Wattage (alternate) | 380 W |
| Voltage (alternate) | 120 V |
| Lamp Current (alternate) | 3.4 A |
| Nominal Luminous Flux (alternate) | 34000 lm |
| Luminous Efficacy (alternate) | 90 lm/W |
| Color Temperature (alternate) | 4600 K |
| CRI (Ra) (alternate) | 60 |
Key Features
- HQI-E family POWERSTAR quartz metal halide construction on a E40 base.
- 4000K color temperature at CRI (Ra) 65.
- 12000-hour average rated life.
- Rated for two control-gear configurations (NAV-VG and HQI-VG) with different output at each.
Compatible Applications
- Commercial and industrial high-bay, floodlighting, and display fixtures rated for this HQI family and base type
- Retail and architectural accent lighting requiring high color rendering metal halide sources
- Maintenance replacement where Osram lamp reference HQI-E 400W/N clear or EAN 4050300292632 is specified
Before Ordering Verify
- Exact Osram Lamp Reference: Match HQI-E 400W/N clear (EAN 4050300292632) to the existing lamp label or fixture documentation.
- Base Type: Confirm the fixture socket matches a E40 base.
- Wattage & Control Gear: Confirm the fixture/ballast is rated for 440W and check which control gear (NAV-VG vs HQI-VG) it uses, since output differs between the two — see the alternate rating table above.
- Color Temperature: Confirm 4000K matches the existing lamps in the fixture or space.
- Burning Position: Confirm the fixture orientation matches the rated h45 burning position.
Safety & Installation Guidelines
- Qualified Installation: Install and service only with power disconnected, following applicable electrical codes.
- UV Exposure: Use only in fixtures with adequate shielding; do not operate with a damaged or broken outer envelope.
- Correct Ballast Match: Operating this lamp on an incompatible ballast/gear type can cause premature failure, incorrect color temperature, or fixture damage.
- Disposal: Metal halide lamps contain mercury — dispose of per local regulations (www.lamprecycle.org).
- Cooling: Allow the lamp to cool fully before handling or removal.
Wholesale & Project Support
ADL Supply supports contractors, facility managers, maintenance departments, and commercial buyers with Osram metal halide lamp replacement identification, project quoting, and volume order support.
For volume pricing, availability, or help confirming the correct Osram replacement lamp, contact ADL Supply at 1-800-235-3489.
