IP Rating

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: IP66
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 water.

*Note: The IP rating system does not test or qualify protection against levels of condensing and/or non condensing humidity.








First Digit (Solids)Second Digit (Liquids)Test Duration EN 60529
0: No protection0: No protection
1: >50mm objects1: Dripping water10 min
2: >12.5mm objects2: Dripping water at 15 degrees10 min
3: >2.5mm objects3: Spraying water5 min
4: >1mm objects4: Splashing water3 min
5: Dust protected5: Water-jets3 min
6: Dust-tight6: Powerfull water-jets3 min
7: Temparary submersion < 1 metre30 min
8: Perminant submersion < 1 metre