3 NEMA and IP

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NemaNema

ororIP ?IP ?

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Degrees Of Protection Provided By

Enclosures For Electrical Equipment

IP Code IEC Standard IEC 529 (1990)EN 60529 now introduces temperature stabilized IP ratings

I P

The First numeral indicates

protection against access to

dangerous parts and protection of internal equipment against the

ingress of solid foreign objects

The second numeral indicates

protection of internal equipmentagainst harmful ingress of water

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Summary

Up until IP66 then the higher the number then the higher the

level of protection

IP67 & IP68 must be viewed differently

IP67 is not a higher specification than IP66 it is a

DIFFERENT specification.

A product that passes IP67 may NOT pass IP66 but may pass

IP65 and should be noted as IP65/67

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NEMA types of enclosures are listed below:

Definitions

[ from NEMA 250-2003]

In Non-Hazardous Locations, the specific enclosure Types, their applications, and the environmental conditions they are designed to protect

against, when completely and properly installed, are as follows:Type 1 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts and to provide a

degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt).

Type 2 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree

of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); and to provide a degree of protection with

respect to harmful effects on the equipment due to the ingress of water (dripping and light splashing).

Type 3 Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; toprovide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to

provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be

undamaged by the external formation of ice on the enclosure.

Type 3R Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts;

to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of 

protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow); and that will be undamaged by theexternal formation of ice on the enclosure.

 NEMA detail courtesy of 

 National Electrical Manufacturers Association Approved by NEMA Enclosures Section 1300 N. 17th Street, Suite 1752 Nov

2005 Rosslyn, VA 22209

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Typical NEMA and NEC types of enclosures

Type 13 Enclosures constructed for indoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a

degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and circulating dust, lint, fibers,

and flyings); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (dripping and light

splashing); and to provide a degree of protection against the spraying, splashing, and seepage of oil and non-corrosive coolants.

 NEMA detail courtesy of  National Electrical Manufacturers Association Approved by NEMA Enclosures Section 1300 N. 17th Street, Suite 1752 Nov 2005 Rosslyn, VA

22209

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IP 54IP 54

IP 54

IP 56

IP 52

IP 67

IP 52

33R

3S

4 and 4X

5

6 and 6P

12 and 12K

IPNEMA

Table of comparisonNEMA classification and IP degree of protection

NOTE THESE ARE APPROXIMATIONS – NOTDIRECT COMPARISONS

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Table of comparisonNEMA classification and IP degree of protection

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Other NEMA enclosures

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Other NEMA enclosures