A hazardous-location LED fixture is an engineered assembly. Its protective construction includes more than the light source: joints, fasteners, entries, seals and permitted components contribute to the evaluated design.
Read the exact assembly documentation
Match the model and its suffixes with the certificate, marking and instructions. Check the permitted supply, gas or dust group, temperature marking and ambient range. Do not apply a material formula or operating range from another fixture to the product in hand.
Preserve entries and enclosure details
Use only the specified cable entries, glands, fittings and fastening arrangements. Do not machine joints, drill openings or substitute seals without an approved instruction. Damage to these details may affect the equipment's protection even when the lamp still lights.
Mount for the permitted operation
Review orientation, clearances, supports, vibration and environmental exposure. A fixture's ability to produce light in a position does not establish that the position is allowed by its instructions. Ambient temperature and contamination can also affect performance and maintenance needs.
Treat replacement as a configuration check
Match replacement lamps, drivers, lenses and other components to the approved parts list. Equal wattage or physical fit is insufficient for a hazardous-location substitution. Follow site isolation and atmosphere procedures before opening or servicing the assembly.
Keep the full model and document reference with the maintenance record so future replacements can be checked against the same configuration.
References: OSHA 1910.307 — Hazardous (classified) locations · UL Solutions — North American hazardous-area certification