Cut Sheet

Volume 8—Sensing Solutions CA08100010E—November 2012 www.eaton.com V8-A2-1
Appendix 2
Enclosure Ratings
Enclosure Ratings
Index of Enclosure Protection—General
The UL
®
, NEMA
®
and IEC
organizations (and other
international groups) define
degrees of protection
provided by electrical
enclosures with respect to
personnel, equipment within
the housing and the ingress
of water.
Subtle differences do exist
between the test procedures
and specifications of these
organizations.
To claim ratings to NEMA
specifications, the testing is
performed and certified by
the manufacturers
themselves.
To comply to UL and IEC
specifications, the
manufacturers must submit
product samples, materials
used and other data to an
independent testing
laboratory before ratings can
be claimed.
In addition, IEC “IP” ratings
differ from NEMA in that they
do not apply to protection
against the risk of explosion
or conditions such as
humidity, corrosive gases,
fungi or vermin. In addition,
different parts of the
equipment can have different
degrees of protection and still
comply.
The table shown below is a
comparison of the NEMA/UL/
IEC enclosure specifications
to be used as an approximate
reference only. Do not use
the table to convert from IEC
to NEMA designations. For a
definition of the ratings listed,
see examples below and
tables on Page V8-A2-2.
NEMA/UL/IEC Enclosure Type Cross-Reference
Enclosure Type Cross-Reference—Approximate
IEC 529 does not specify equivalents to NEMA Enclosure Types 7, 8, 9 or 10.
NEMA
Enclosure
Rating
IP10 IP20 IP21 IP22 IP23 IP30 IP31 IP32 IP33 IP40 IP41 IP42 IP43 IP50 IP51 IP52 IP53 IP54 IP55 IP56 IP60 IP61 IP62 IP63 IP64 IP65 IP66 IP67 IP68
1 XXXXX
————————————————————————
2 XXXXX
————————————————————————
3 XXXXXXXXXXXXXXXXXXXXXXXXX
————
3R XXXXXXXX
—————————————————————
3S XXXXXXXXXXXXXXXXXXXXXXXXX
————
4 XXXXXXXXXXXXXXXXXXXXXXXXXXX
——
4X XXXXXXXXXXXXXXXXXXXXXXXXXXX
——
6 XXXXXXXXXXXXXXXXXXXXXXXXXXXX
—
6P XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
12 XXXXXXXXXXXXXXXXXXXXXXXXXX
———
13 XXXXXXXXXXXXXXXXXXXXXXXXXX
———