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NEMA Ratings: What are they?

NEMA 250 is a product standard that addresses many aspects of enclosure design and performance.

 NEMA Protection against solid objects Approx IP equivalent
1 Indoor, protection from contact. IP23
2 Indoor, limited protection from dirt and water. IP30
3 Outdoor, some protection from rain, sleet, windblown dust and ice. IP64
3R Outdoor, some protection from rain, sleet and ice. IP32
4 Indoor or outdoor, some protection from windblown dust, rain, splashing water, hose-directed water and ice. IP66
4X Indoor or outdoor, some protection from corrosion, windblown dust, rain, splashing water, hose-directed water and ice. IP66
6 Indoor or outdoor, some protection from ice, hose-directed water, entry of water when submerged at limited depth. IP67
12 Indoor, protection from dust, falling dirt and dripping non-corrosive liquids. IP55
13 Indoor, protection from dust, spraying water, oil and non-corrosive liquids. IP65