EXPLOSION PROOF surface mounted luminaire is suitable for using in areas in which an explosive atmosphere is likely to occour in normal operation occasionally. High light efficiency, qualified manufacturing procedure, good function in dusty places, high mechanical resistance, safety and the ease of service are among the greatest advantages of this luminaire. STANDARDS: Manufactured to comply with EN 60598 / BS 4533, CE marked Application:Suitable to use where high efficiency and good mechanical strength is required in places in which an explosive atmosphere is likely to occure in normal operation occasionally.(Zones 1, 21 and 2, 22) such as refineries, power plants, chemical industries, etc