NEMA Ratings and IP Equivalency Chart

NEMA RatingIP EquivalentNEMA DefinitionProtection Against Solids Protection Against Liquids
1IP10Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment and to provide a degree of protection against falling dirt1 = Protected against solid foreign objects of 50mm in diameter and greater0 = Not Protected
2IP11Enclosures constructed for indoor 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, and to provide a degree of protection against dripping and light splashing of liquids1 = Protected against solid foreign objects of 50mm in diameter and greater1 = Protected against vertically falling water drops
3IP54Enclosures constructed for either indoor or outdoor used to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to proved a degree of protection against falling dirt, rain, sleet, snow, and windblown dust; and that will undamaged by external formation of ice on the enclosure5 = Protected against dust - Limited to ingress (no harmful deposit)4 = Protected against water sprayed from all directions - Limited to ingress permitted.
3RIP14Enclosures 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 enclosure1 = Protected against solid foreign objects of 50mm in diameter and greater4 = Protected against water sprayed from all directions - Limited to ingress permitted.
3SIP54Enclosures constructed for either indoor or outdoor use 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, snow, and windblown dust; and in which the external mechanism(s) remain operable when ice laden.5 = Protected against dust - Limited to ingress (no harmful deposit)4 = Protected against water sprayed from all directions - Limited to ingress permitted.
4IP66Enclosures constructed for either indoor or outdoor use 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, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure6 = Totally protected against dust6 = Protected against strong jets of water from all directions - Limited to ingress permitted.
4XIP66Enclosures constructed for either indoor or outdoor use 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, snow, windblown dust, splashing water, hose-directed water, and corrosion; and that will be undamaged by thee external formation of ice on the enclosure6 = Totally protected against dust6 = Protected against strong jets of water from all directions - Limited ingress permitted.
5IP52Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against settling airborne dust, lint, fibers, and flyings; and to provide a degree of protection against dripping and light splashing of liquids. 5 = Protected against dust - Limited ingress (no harmful deposit)2 = Protected against direct sprays of water up to 15° from the vertical.
6IP67Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against hose-directed water and the entry of water during occasional temporary submersion at a limited depth; and that will be undamaged by the external formation of ice on the enclosure.6 = Totally protected against dust7 = Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes.
6PIP67Enclosures constructed for either indoor or outdoor use to provide a degree of protection to the personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against hose-directed water and the entry of water during prolonged submersion at a limited depth; and that will be undamaged by the external formation of ice on the enclosure6 = Totally protected against dust7 = Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes.
12 and 12KIP52Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and flying; and against dripping and light splashing of liquids5 = Protected against dust - Limited to ingress (no harmful deposit)2 = Protected against direct sprays of water up to 15° from the vertical.
13IP54Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and flyings; and against the spraying, splashing, and seepage of water, oil, and noncorrosive coolants. 5 = Protected against dust - Limited to ingress (no harmful deposit)4 = Protected against water sprayed from all directions - Limited to ingress permitted.

 

Note: The purpose of this table is to provide general information on the definitions of NEMA Enclosure Types and the equivalent definitions of IEC 60529 Enclosure Classification Designations. NEMA ratings and testing can be used as compliance for IP Rating but not vice versa. 

[For more detailed and complete information, ANSI/NEMA 250, Enclosures for Electrical Equipment (1000 Volts Maximum) and IEC 60529 Degrees of protection provided by enclosures (IP Code) should be consulted.]