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IP Classification Codes
A simple explanation of the IP rating system is written below. Please refer to more specialized information
material if you wish to know more.
International Standard IEC 60529 outlines an international classification system that describes the sealing
characteristics of electrical equipment. The classification system defines the level of protection provided by
enclosures to prevent the ingress of foreign objects and moisture into the electrical equipment.
The classification system uses the “IP” code, or “Ingress Protection” code, to define the level of seal.
An IP number contains two numbers (i.e. IP67) in most instances which relate to the level of protection
provided by an enclosure or housing. Either number may be shown as “X” (i.e. IPX6 / IP7X) to indicate the
“X” part is not tested.
IP 6 7
Code letters
2nd Digit
1st Digit
Degrees of Protection (Moisture) – 2nd Digit
Degrees of Protection (Foreign Bodies) – 1st Digit
IP Level
Description of Protection Level
IP Level
Description of Protection Level
0
Not protected
1
Protected against vertically falling water
drops
Protected against foreign solid objects of
12.5 mm diameter and greater
(Protect fingers or similar objects)
2
Protected against vertically falling water
drops when enclosure is tilted up to 15º
3
Protected against foreign solid objects of
2.5 mm diameter and greater
(Protect Tools, thick wires, etc.)
3
4
Protected against water splashed against
the component from any direction
4
Protected against foreign solid objects of
1.0 mm diameter and greater
(Protect Most wires, screws, etc.)
Protected from the amount of dust that
would interfere with normal operation
5
Protected against water projected in jets
from any direction
Dust tight
(No ingress of dust; complete protection
against contact)
6
Protected against water projected in
powerful jets from any direction
7
Protected against temporary immersion in
water between 15cm and 1m for 30min.
8
Protected against continuous immersion
in water, or as specified by the user
0
Not protected
1
Protected against foreign solid objects of
50 mm diameter and greater
(Protect a large surface of the body, such
as the back of a hand)
2
5
6
Protected against water sprayed at an
angle up to 60º on either side of the
vertical
8