B.3 Enclosure Ratings, Continued

IEC Designations, continued

Table B-6 provides an approximate conversion from NEMA enclosure type numbers to IEC enclosure classification designations. The NEMA types meet or exceed the test requirements for the associated IEC classifications; for this reason the Table cannot be used to convert from IEC classifications to NEMA types.

Table B-6

NEMA Enclosure Type Numbers and Comparable IEC

 

 

Enclosure Classification

 

 

 

 

 

 

 

 

NEMA Enclosure

 

IEC Enclosure

 

 

Type Number

 

Classification Designation

 

 

 

 

 

 

 

 

1

 

 

IP 10

 

 

2

 

 

IP 11

 

 

3

 

 

IP 54

 

 

 

 

 

 

 

 

3R

 

 

IP 14

 

 

3S

 

 

IP 54

 

 

4 and

4X

 

IP 56

 

 

 

 

 

 

 

 

5

 

 

IP 52

 

 

6 and

6P

 

IP 67

 

 

12 and

12K

 

IP 52

 

 

13

 

 

IP 54

 

 

 

 

 

 

NOTE: This comparison is based on tests specified in IEC Publication 529

94

ST 3000 Release 300 Installation Guide

2/05