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-protected0
Protected against solid foreign objects of 50mm diameter and greaterThe object probe, sphere of 50mm diameter shall not fully penetrate1
Protected against solid foreign objects of 12.5mm diameter and greaterThe object probe, sphere of 12.5mm diameter shall not fully penetrate2
Protected against solid foreign objects of 2.5mm diameter and greaterThe object probe, sphere of 2.5mm diameter shall not penetrate at all3
Protected against solid foreign objects of 1.0mm diameter and greaterThe object probe, sphere of 1.0mm diameter shall not4
Dust protectedIngress 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 safety5
Dust tightNo ingress of dust6

Degrees of Protection Against Water
Second characteristic numeral Description Definition
0No protection
1Protected against vertically falling water dropsVertically falling water drops shall have no harmful effects
2Protected against vertically falling water drops when enclosure tilted up to 15 degreesVertically 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
3Protected against spraying waterWater sprayed at an angle up to 60 degreed on either side of the vertical axis shall have no harmful effects
4Protected against splashing waterWater splashed against the enclosure from any direction shall have no harmful effects
5Protected against water jetsWater projected in jets against the enclosure from any direction shall have no harmful effects
6Protected against powerful water jetsWater projected in powerful water jets against the enclosure from any direction shall have no harmful effects
7Protected against the effects of temporary immersion in waterIngress 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
8Protected against the effects of continuous immersion in waterIngress 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
111IP23
222IP30
333IP64
3R3R3RIP32
444IP66
4X4X4XIP66
666IP67
121212IP55
131313IP65





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