Explosion-proof luminaire of protection level 2Ex for general lighting of explosive zones of class 2 and fire-hazardous zones of classes P-I, P-II according to marking on explosion protection, and also its application in zones 21, 22 is allowed provided compliance with requirements of NPAOP 40.1.1.32-01 " Rules of arrangement of electrical installations "and other normative documents in premises and external installations, in oil, oil refining, gas, chemical, cement, woodworking and other industries.