NEMA (National Electrical Manufacturers Association) ratings define enclosure performance for environmental protection under U.S. standards, including exposure to dust, water, and corrosion.

IP (Ingress Protection) ratings, defined by IEC 60529, classify an enclosure’s resistance to solid particles and liquid ingress using a two-digit system.

We outline how these rating systems compare, including what NEMA 6P is equivalent to in IP.