|
|
NEMA Class
Below is a simple NEMA and IP Rating cross reference.
| NEMA
enclosure
type no.
| | IEC
enclosure
class
| 1
|
General-purpose. Protects against dust, light, and indirect splashing but is not dust-tight; primarily prevents contact with live parts; used indoors and under normal atmospheric conditions.
| IP10
|
| Drip-tight. Similar to Type 1 but with addition of drip shields; used where condensation may be severe (as in cooling rooms and laundries).
| IP11
| | 3 and 3S
| Weather-resistant. Protects against weather hazards such as rain and sleet; used outdoors on ship docks, in construction work, and in tunnels and subways.
| IP54
| | 3R
| Intended for outdoor use. Provides a degree of protection against falling rain and ice formation. Meets rod entry, rain, external icing, and rust-resistance design tests.
| IP14
| | 4 and 4X
| Watertight (weatherproof). Must exclude at least 65 GPM of water from 1-in. nozzle delivered from a distance not less than 10 ft for 5 min. Used outdoors on ship docks, in dairies, and in breweries.
| IP56
| | 5
| Dust-tight. Provided with gaskets or equivalent to exclude dust; used in steel mills and cement plants.
| IP52
| | 6 and 6P
| Submersible. Design depends on specified conditions of pressure and time; submersible in water; used in quarries, mines, and manholes.
| IP67
| | 7
| Hazardous. For indoor use in Class I, Groups A, B, C, and D environments as defined in the NEC.
| —
| | 8
| Hazardous. For indoor and outdoor use in locations classified as Class I, Groups A, B, C, and D as defined in the NEC.
| —
| | 9
| Hazardous. For indoor and outdoor use in locations classified as Class II, Groups E, F, or G as defined in the NEC.
| —
| | 10
| MSHA. Meets the requirements of the Mine Safety and Health Administration, 30 CFR Part 18 (1978).
| —
| | 11
| General-purpose. Protects against the corrosive effects of liquids and gases. Meets drip and corrosion-resistance tests.
| —
| | 12 and 12K
| General-purpose. Intended for indoor use, provides some protection against dust, falling dirt, and dripping non corrosive liquids. Meets drip, dust, and rust resistance tests.
| IP52
| | 13
| General-purpose. Primarily used to provide protection against dust, spraying of water, oil, and non corrosive coolants. Meets oil exclusion and rust resistance design tests.
| IP54
|
|
|
