CONVERSION OF NEMA ENCLOSURE TYPE NUMBERS TO IEC CLASSIFICATION DESIGNATIONS


NEMA ENCLOSURE TYPE NUMBER
DESCRIPTION
IEC ENCLOSURE CLASSIFICATION DESIGNATION
1
General purpose
IP10
2
Drip proof protection against falling water and dirt
IP11
3
Dust & rain tight protection against windblown dust, rain & sleet & damage from formation of ice
IP54
3R
Rain proof & ice/sleet proof protection against falling rain & damage from formation of ice
IP54
3S
Dust , rain tight & ice sleet proof protection against sleet & damage from formation of ice
IP54
4
Water tight and dust tight
IP56 / IP66
4X
Water tight and dust tight & corrosion resistant protection, hose directed water and damage from formation of ice
IP56 / IP66
5
Dust tight and drip tight protection against dust, fibers, falling dirt, and dripping non corrosive liquids
IP52
6
Temporary submersion protection against falling dirt, dust, fibers, hose directed water and temporary submersion in water
IP67
6P
Prolonged submersion protection against falling dirt, dust, fibers, hose directed water and prolonged submersion in water
IP67
12
Dust tight and drip tight protection against dust, fibers, falling dirt, and dripping non corrosive liquids (enclosure without knock outs)
IP52
12K
Dust tight and drip tight protection against dust, fibers, falling dirt, and dripping non corrosive liquids (enclosure without knock outs)
IP52
13
Dust tight and Oil tight protection against dust, spraying of water, oil, and noncorrosive coolant.
IP54

Note : IP RATINGS DO NOT INDICATE ANY DEGREE OF CORROSION RESISTANCE

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