46db57fd__IP_Equivalency_Chart___Siemon__NEMA_Definition
[NEMA Rating] 3R [IP Equivalent] IP14 [IP Definition] 1 = Protected against vertically falling water drops [4] 4 = Protected against water sprayed from all directions - Limited to ingress permitted. [NEMA Definition] 
Enclosures constructed for either indoor or outdoor used to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, and snow; and that will be undamaged by external formation of ice on the enclosure
NEMA Rating and IP Equivalency Chart - Siemon
NEMA Definition