NEMA Ratings and IP Equivalency Chart
| NEMA Rating | IP Equivalent | NEMA Definition | Protection Against Solids | Protection Against Liquids |
|---|---|---|---|---|
| 1 | IP10 | 建造用于室内使用的外壳，为人员提供一定程度的保护，防止与封闭设备的偶然接触，并提供一定程度的保护，防止坠落的灰尘 | 1 =防止直径大于等于50mm的固体异物 | 0 = Not Protected |
| 2 | IP11 | 为室内建造的外壳，用于为人员提供一定程度的保护，防止与封闭设备的偶然接触, to provide a degree of protection against falling dirt, and to provide a degree of protection against dripping and light splashing of liquids | 1 =防止直径大于等于50mm的固体异物 | 1 = Protected against vertically falling water drops |
| 3 | IP54 | Enclosures 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 enclosure | 5 = Protected against dust - Limited to ingress (no harmful deposit) | 4 =防止从各个方向喷洒的水-限制进入允许. |
| 3R | IP14 | Enclosures 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; 而且它不会被外壳上外部形成的冰破坏 | 1 =防止直径大于等于50mm的固体异物 | 4 =防止从各个方向喷洒的水-限制进入允许. |
| 3S | IP54 | Enclosures 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 =防止从各个方向喷洒的水-限制进入允许. |
| 4 | IP66 | Enclosures 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 enclosure | 6 = Totally protected against dust | 6 =防止来自四面八方的强大水柱-限制进入允许. |
| 4X | IP66 | Enclosures 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 enclosure | 6 = Totally protected against dust | 6 =防止来自四面八方的强大水柱-允许有限进入. |
| 5 | IP52 | Enclosures 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 =防止直接喷洒的水高达15°从垂直. |
| 6 | IP67 | Enclosures 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 dust | 7 =暂时浸泡在15cm到1m之间不受影响. Duration of test 30 minutes. |
| 6P | IP67 | Enclosures 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 enclosure | 6 = Totally protected against dust | 7 =暂时浸泡在15cm到1m之间不受影响. Duration of test 30 minutes. |
| 12 and 12K | IP52 | Enclosures 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 liquids | 5 = Protected against dust - Limited to ingress (no harmful deposit) | 2 =防止直接喷洒的水高达15°从垂直. |
| 13 | IP54 | Enclosures 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 =防止从各个方向喷洒的水-限制进入允许. |
Note: 该表的目的是提供关于NEMA外壳类型的定义和IEC 60529外壳分类名称的等效定义的一般信息. NEMA评级和测试可以用作IP评级的符合性，但反之则不行.
[For more detailed and complete information, ANSI/NEMA 250, 应参考电气设备外壳(最大1000伏)和IEC 60529外壳提供的保护程度(IP代码).]