NEMA vs IEC Protection Type Comparison

NEMA TYPE

APPLICATION DESCRIPTION

APPROX. IEC IP EQUIVALENT

NEMA 1

Indoor, basic protection

IP10

NEMA 3R

Outdoor, rain, sleet, ice

IP24

NEMA 4

Indoor/outdoor, water tight

IP66

NEMA 4X

Same as 4 + corrosion resistant

IP66

NEMA 12

Indoor, dust, falling dirt, dripping non-corrosive liquids

IP52

NEMA 7

Hazardous (explosion-proof)

No direct IP equivalent

NEMA 13

Oil/coolant seepage resistance

IP54