Industry Standard Ratings
An Ingress protection is a way of showing how effective an item is at blocking out foreign bodies. The IP stands for Ingress Protection and the following numbers (i.e. IP67, IP56, etc) refer to the protection an item offers against the intrusion of the two categories of foreign bodies, i.e. solid (e.g. dust) and liquid (water).
The National Electrical Manufacturers Association (NEMA) defines standards used in North America for various grades of electrical enclosures typically used in industrial applications. Each is rated to protect against personal access to hazardous parts, and additional type-dependent designated environmental conditions. A typical NEMA enclosure might be rated to provide protection against environmental hazards such as water, dust, oil or coolant or atmospheres containing corrosive agents such as acetylene or gasoline.
UL (Underwriters Laboratories) Listing means that UL has tested representative samples of a product and determined that the product meets specific, defined requirements. These requirements are often based on UL's published and nationally recognized Standards for Safety.
UL Standards encompass UL's extensive safety research and scientific expertise. With over a century of experience in the development of more than 1,500 Standards, UL is an accredited standards developer in the US and Canada. In extending its global public safety mission, UL Standards partners with national standards bodies in countries around the world to build a safer, more sustainable world.