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.
IP TABLE:
| IP..
|
First digit:
Ingress of solid objects
|
Second digit:
Ingress of liquids
|
| 0
|
No protection
|
No protection
|
| 1
|
Protected against solid objects over 50mm e.g. hands, large tools.
|
Protected against vertically falling drops of water or condensation.
|
| 2
|
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.
|
| 3
|
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.
|
| 4
|
Protected against solid objects over 1.0mm e.g. wires.
|
Protected against splash water from any direction.
|
| 5
|
Limited protection against dust ingress.
(no harmful deposit)
|
Protected against low pressure water jets from any direction. Limited ingress permitted.
|
| 6
|
Totally protected against dust ingress.
|
Protected against high pressure water jets from any direction. Limited ingress permitted.
|
| 7
|
N/A
|
Protected against short periods of immersion in water.
|
| 8
|
N/A
|
Protected against long, durable periods of immersion in water.
|
| 9k
|
N/A
|
Protected against close-range high pressure, high temperature spray downs.
|
