Nema Enclosure Definitions

• NEMA 1 - General Purpose Indoor Sheet metal enclosure intended for indoor use. Primary purpose is to prevent accidental personnel contact with enclosed equipment, although they will also provide some protection against falling dirt.
• NEMA 2 - Drip Proof Indoor Indoor enclosure that protects contents against falling non-corrosive liquids and dirt. Must be equipped with a drain.
• NEMA 3 - Dust Tight, Raintight, Sleet Resistant, Ice Resistant
• NEMA 3R - Rainproof Sleet Resistant, Ice Resistant
• NEMA 3S - Dust Tight, Raintight, Sleet Proof, Ice Proof Outdoor enclosures for protection against windblown dust, rain and sleet. All have provision for locking.
• NEMA 4 - Water Tight & Dust Tight - Indoor and Outdoor Protect contents against splashing, seeping, falling, or hose-directed water and severe external condensation. Commonly used in food-processing plants where equipment hosedown is required.
• NEMA 4X - NEMA 4 with Corrosion Resistant Enclosure
• NEMA 5 - Dust Tight
• NEMA 6 - Submersible, Watertight, Dust Tight and Sleet (Ice) Resistant - Indoor and Outdoor Capable of being submerged up to 30 minutes in up to 6 feet of water without harm to the contents.
• NEMA 7 - Hazardous Locations - Indoor - Air Break Equipment (Class I Div. I Groups A, B, C or D)
• NEMA 8 - Hazardous Locations - Indoor - Oil-Immersed Equipment
• NEMA 9 - Hazardous Locations - Indoor - Air Break Equipment (Class II, Div. I, Group E, F or G)
• NEMA 10 - Mine Atmospheres - For use in mines containing methane or natural gas.
• NEMA 11 - Corrosion Resistant and Drip Proof - Indoor Indoor enclosures that protect contents from dripping, seepage and external condensation of corrosive liquids, as well as corrosive fumes
• NEMA 12 - Industrial Use - Dust Tight & Drip Tight - Indoor Protect enclosed equipment from lint, fibers, dust, dirt and light splashing, seepage, dripping and external condensation of noncorrosive liquids.
• NEMA 13 - Oil Tight & Dust Tight - Indoor Protect enclosed equipment from lint, dust and seepage, external condensation and spraying of water, oil, or coolant. They have oil-resistant gaskets and must have provision for oiltight conduit entry.