Electrical Enclosure Ratings: NEMA
Electrical enclosure protection ratings — NEMA 250-2020 types (1 through 13 with variants) and IEC 60529 IP codes (IP20 through IP69K); includes protection descriptions, indoor/outdoor use, IP equivalents, corrosion resistance, hazardous location class/group, typical materials, and typical applications
| rating system | designation | corrosion resistance | dust protection level | enclosure id | hazardous location | hazloc class group | indoor outdoor | ip equivalent | protection description | standard | typical applications | typical materials | water protection level |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NEMA | 9 | no | dust-ignition-proof | NEMA 9 | yes | Class II Div 1 Groups E,F,G | indoor | N/A | Dust-ignition-proof for Class II hazardous locations Groups E F G; prevents entry of combustible/electrically-conductive dust; indoor only | NEMA 250-2020, NEC Article 500, UL 698 | grain elevators flour mills coal handling coal mines indoor combustible dust locations | cast iron; steel with gaskets and special seals | dripping light splash |
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