| Nema Control Enclosure Ratings |
| ENCLOSURE TYPE | DESCRIPTION |
| NEMA TYPE 1 GENERAL PURPOSE | Enclosures are intended for indoor use primarily to provide a degree of protection against accidental contact with the enclosed equipment or locations where unusual service conditions do not exist. |
| NEMA TYPE 2 DRIPTIGHT | Enclosure are intended for indoor use primarily to provide a degree of protection against limited amounts of falling water and dirt. |
| NEMA TYPE 3 WEATHER RESISTANT | Enclosures are intended for outdoor use primarily to provide a degree of protection against windblown dust, rain, and sleet; undamaged by the formation of ice on the enclosure. |
| NEMA TYPE 3R RAINTIGHT | Enclosures are intended for outdoor use primarily to provide a degree of protection against falling rain and sleet; undamaged by the formation of ice on the enclosure. |
| NEMA TYPE 4 WATERTIGHT | Enclosures are intended for outdoor use primarily to provide a degree of protection against windblown dust and rain, splashing water, and hose directed water; undamaged by the formation of ice on the enclosure. |
| NEMA TYPE 4X CORROSION RESISTANT | Enclosures are intended for outdoor use primarily to provide a degree of protection against corrosion, wind blown dust and rain, splashing water and hose directed water; undamaged by the formation of ice on the enclosure. |
| NEMA TYPE 5 DUST TIGHT | Enclosure are intended for indoor use primarily to provide a degree of protection against falling dust. |
| NEMA TYPE 6 SUBEMERSIBLE | Enclosures are intended for outdoor use primarily to provide a degree of protection against submersion in water at a specified pressure and time. |
| NEMA TYPE 7 HAZARDOUS LOCATIONS CLASS I AIR BREAK | Enclosures are intended for hazardous use, designed to meet application requirements of the National Electrical Code for Class I, hazardous locations (explosive atmosphere). Circuit interruption occurs in air. |
| NEMA TYPE 8 HAZARDOUS LOCATIONS CLASS II-OIL-IMMERSED GROUP A,B,C, AND D | Enclosures are intended for hazardous use, designed to meet application requirements of the National Electrical Code for Class II hazardous locations (explosive atmosphere). Circuit interruption occurs in oil. |
| NEMA TYPE 9 HAZARDOUS LOCATIONS CLASS II, GROUP E,F,OR G | Enclosures are intended for hazardous use, designed to meet application requirements of National Electrical code for Class II Hazardous Locations (combustible dusts, grains, etc.). |
| NEMA TYPE 10 BUREAU OF MINES | Enclosures are intended for hazardous use, designed to meet requirements of U.S. Bureau of Mines. Suitable for use in coal mines. |
| NEMA TYPE 11 ACID & FUME RESISTANT OIL IMMERSED | Enclosures are intended for use in corrosive atmospheres, provide oil immersion of apparatus such that it is suitable for applications where equipment is subject to acid or their corrosive fumes. |
| NEMA TYPE 12 INDUSTRIAL USE | Enclosures are intended for heavy duty indoor use primarily to provide a degree of protection against dust, falling dirt, and dripping noncorrosive liquids. |
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