| Explosion-protection concept | Depending on the product and intended use, a luminaire may use flameproof enclosure protection, increased safety, or a combination of protection concepts. | Controls the risk of an internal ignition source igniting a surrounding explosive atmosphere. | Check the complete Ex marking and certificate for the exact model; protection concepts and permitted applications are model-specific. |
| Enclosure and flamepaths | Robust metal enclosures and, where flameproof protection is used, engineered joints designed and tested as part of the certified enclosure. | Provides mechanical protection and, in applicable designs, contains an internal explosion and prevents flame transmission. | Confirm the enclosure material, protection concept, installation instructions, and any restrictions on opening or maintenance. |
| LED light source and circuit board | LED arrays mounted on a circuit board or metal-core board, with optical output and electrical configuration selected for the luminaire. | Produces light efficiently while allowing heat to be transferred away from the LEDs. | Review rated input, light output, colour characteristics, operating temperature range, and any replacement-part requirements. |
| Optical cover or lens | Impact-resistant glass or another material specified in the certified design; optical elements may be sealed or retained by a defined assembly. | Protects the light source and distributes light for the intended task. | Check the specified cover material, impact rating, cleaning guidance, and whether replacement covers must be approved parts. |
| Thermal management | Heat-dissipating housing or heat sink, with LED and driver temperatures controlled within the design limits. | Supports component life and helps the complete luminaire meet its certified temperature class or maximum surface-temperature limits. | Verify the stated ambient-temperature range and temperature marking for the exact configuration. |
| LED driver and electrical protection | Driver circuitry matched to the LED load, with protection features and component selection evaluated as part of the certified luminaire. | Supplies controlled power and helps protect against specified electrical or thermal fault conditions. | Check supply voltage and frequency, power consumption, power factor where specified, and permitted driver or component replacements. |
| Gaskets and seals | Seals fitted at designated enclosure interfaces and selected for the environmental and temperature conditions of the product. | Helps limit ingress of dust and water when used and maintained as instructed. | Check the declared IP rating, seal inspection guidance, and any requirements for replacement after opening. |
| Cable entries and terminals | Certified or otherwise suitably approved cable-entry arrangements and terminals, with compatible cable glands selected for the installation. | Maintains the intended protection of electrical connections and enclosure entries. | Confirm thread type, cable range, entry protection requirements, terminal capacity, and any unused-entry closure requirements. |
| Earthing and bonding | Protective-earth connection points and bonding provisions as specified by the luminaire design and installation instructions. | Supports electrical safety and equipotential bonding where required by the installation. | Follow the product wiring diagram and local electrical regulations; do not assume earthing arrangements are identical across models. |
| ATEX and IECEx certification information | Product documentation may include an ATEX marking and an IECEx certificate reference when the specific model has the relevant approvals. | Identifies the assessed equipment, protection level, gas or dust group, and applicable operating conditions. | Match the nameplate, certificate number, equipment type, and special conditions of use to the exact product and installation. |
| Ingress protection and environmental suitability | IP ratings such as IP66 or IP67 may be specified for particular luminaire designs; ratings are not universal to all products. | Indicates tested resistance to dust ingress and water exposure under defined test conditions. | Check the exact IP rating and environmental limits in the product datasheet; an IP rating is not a substitute for Ex certification. |
| Installation, inspection, and maintenance | Instructions define mounting, wiring, inspection, permitted servicing, and approved replacement parts. | Helps preserve the certified design and safe operation throughout the product’s service life. | Use the manufacturer’s instructions for the exact model and have installation and maintenance carried out by suitably competent personnel. |