 Indoor NEMA Classification | | Provide a Degree of Protection Against the Following Environmental Conditions | 1 | 2 | 4 | 4X | 5 | 6 | 6P | 11 | 12 | 12X | 13 | | Accidental Contact with Equipment | X | X | X | X | X | X | X | X | X | X | X | | Falling Dirt | X | X | X | X | X | X | X | X | X | X | X | | Falling Liquids and Light Splashing | | X | X | X | | X | X | X | X | X | X | | Dust, lint Fibers, and Flyings | | | X | X | X | X | X | | X | X | X | | Hosedown and Splashing Water | | | X | X | | X | X | | | | | | Oil and Soolant Seepage | | | | | | | | | X | X | X | | Oil or Cooling Spraying and Splashing | | | | | | | | | | | X | | Corrosive Agents | | | | X | | | X | X | | | | | Occasional Temporary Submersion | | | | | | X | X | | | | | | Occasional Prolonged Submersion | | | | | | | X | | | | |
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| Outdoor NEMA Classifications | | Provide a Degree of Protection Against the Following Environmental Conditions | 3 | 3R | 3S | 4 | 4X | 6 | 6P | | Accidental Contact with Equipment | X | X | X | X | X | X | X | | Rain, Snow, and Sleet | X | X | X | X | X | X | X | | Sleet | | | X | | | | | | Windblown Dust | X | | X | X | X | X | X | | Hosedown | | | | X | X | X | X | | Corrosive Agents | | | | | X | | X | | Occasional Temporary Submersion | | | | | | X | X | | Occasional Prolonged Submersion | | | | | | | X |
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| Matching the NEMA and IP Classifications | | NEMA Enclosure Type | IEC Enclosure Environmental Classification | | 1 | IP20 | | 2 | IP21 | | 3 | IP54 | | 3R | IP24 | | 3S | IP54 | | 4, 4X | IP56 | | 5 | IP52 | | 6, 6P | IP67 | | 12, 12K | IP52 | | 13 | IP54 |
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