There are two types of enclosure rating systems. One is the National Electronic Manufacturers Association (NEMA) rating system, which is primarily used in the U.S. and Canada. The other is Ingress Protection or International Protection (IP) rating system. Both of the standards establish specifications about the performance criteria for different enclosures. To help you determine which type of enclosure is right for you, we’ve put together a list of NEMA enclosure types, IP Equivalency Ratings and definitions to help you compare your options.