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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.

 

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