IEC 529/IP Environmental Ratings

03/01/1999



Complied by Rittal, www.rittal.com


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

The object probe, sphere of 2.5mm diameter shall 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

Ingress of dust is not totally prevented, but dust 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






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