IP Ratings (Ingress Protection) and Equivalent NEMA Ratings Explained
An IP rating contains two numbers (i.e. IP65) in most instances which relate to the level of protection provided by an enclosure or housing.
The first number relates to protection from solids as follows:
The second number relates to protection from liquids as follows:
Example: IP66 = Dust tight and protected against heavy water jet spray.
Equivalent NEMA Ratings
NEMA (National Electrical Manufacturers Association) ratings can be approximately compared to those of the IP system as shown below. Other factors such as corrosion protection are also involved in the NEMA system, please refer to official documentation for detailed information. Below find the equivalent codes.