IEC 529/IP Environmental Ratings

The degree of protection provided by an enclosure is indicated by the IP code in the following way: I P 2 3 First characteristic numeral – e.g. protection against solid foreign objects of 12.5mm diameter and greater Second characteristic numeral – e.g. protected against spraying water

Degrees of Protection Against Solid Objects

Description
Definition
First Characteristic Numeral

Non-protected

0

Protected against solid foreign objects of 50mm diameter and greater
The object probe, sphere of 50mm diameter shall not fully penetrate
1

Protected against solid foreign objects of 12.5mm diameter and greater
The object probe, sphere of 12.5mm diameter shall not fully penetrate
2

Protected against solid foreign objects of 2.5mm diameter and greater
对象探测器,球体直径2.5毫米的not penetrate at all
3

Protected against solid foreign objects of 1.0mm diameter and greater
The object probe, sphere of 1.0mm diameter shall not
4

Dust protected
入口的尘埃不能完全避免,但灰尘shall not penetrate in a quiantity to interfere with satisfactory operation of the apparatus or to impair safety
5

Dust tight
No ingress of dust
6

Degrees of Protection Against Water

Second characteristic numeral
Description
Definition

0
No protection

1
Protected against vertically falling water drops
Vertically falling water drops shall have no harmful effects

2
Protected against vertically falling water drops when enclosure tilted up to 15 degrees
Vertically falling water drops shall have no harmful effects when the enclosure is tilted at any angle up to 15 degrees on either side of the vertical axis

3
Protected against spraying water
Water sprayed at an angle up to 60 degreed on either side of the vertical axis shall have no harmful effects

4
Protected against splashing water
Water splashed against the enclosure from any direction shall have no harmful effects

5
Protected against water jets
Water projected in jets against the enclosure from any direction shall have no harmful effects

6
Protected against powerful water jets
Water projected in powerful water jets against the enclosure from any direction shall have no harmful effects

7
Protected against the effects of temporary immersion in water
Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is continuously immersed in water under standardized conditions of pressure and time

8
Protected against the effects of continuous immersion in water
Ingress of water in quantities causing harmful effects shall not be possible when the enclosure is continuously immersed in water under

NEMA Type rating
UL Type rating
CSA Type rating
Apprx. IEC/IP classification

1
1
1
IP23

2
2
2
IP30

3
3
3
IP64

3R
3R
3R
IP32

4
4
4
IP66

4X
4X
4X
IP66

6
6
6
IP67

12
12
12
IP55

13
13
13
IP65

Do you have experience and expertise with the topics mentioned in this content? You should consider contributing to our CFE Media editorial team and getting the recognition you and your company deserve. Clickhereto start this process.