IP Ratings (Ingress Protection)
A two-digit number established by the International Electro Technical Commission, is used to provide an Ingress Protection rating to a piece of electronic equipment or to an enclosure for electronic equipment.
The protection class after EN60529 are indicated by short symbols that consist of the two code letters IP and a code numeral for the amount of the protection.
Example: IP65 (NEMA 4)
The two digits represent different forms of environmental influence:
• The first digit represents protection against ingress of solid objects.
• The second digit represents protection against ingress of liquids.
The larger the value of each digit, the greater the protection. As an example, a product rated IP54 would be better protected against environmental factors than another similar product rated as IP42.
Protected against solid objects over 50mm e.g. hands, large tools.
Protected against vertically falling drops of water or condensation.
Protected against solid objects over 12.5mm e.g. hands, large tools.
Protected against falling drops of water, if the case is disposed up to 15 from vertical.
Protected against solid objects over 2.5mm e.g. wire, small tools.
Protected against sprays of water from any direction, even if the case is disposed up to 60from vertical.
Protected against solid objects over 1.0mm e.g. wires.
Protected against splash water from any direction.
Limited protection against dust ingress.
Protected against low pressure water jets from any direction. Limited ingress permitted.
Totally protected against dust ingress.
Protected against high pressure water jets from any direction. Limited ingress permitted.
Protected against short periods of immersion in water.
Protected against long, durable periods of immersion in water.
Protected against close-range high pressure, high temperature spray downs.