Cut Sheet

Volume 10—Enclosed Control CA08100012E—November 2012 www.eaton.com V10-T1-5
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Overview
Enclosed Control Products
Enclosure Ratings
IEC IP Index of Protection Ratings
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
type 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 type 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 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.
NEMA/UL/IEC Enclosure Type Cross-Reference—Approximate
IEC 529 does not specify equivalents to NEMA enclosure types 7, 8, 9 or 10.
First
Number Description
Second
Number Description
0 No protection 0 No protection
1 Protection against solid objects greater than 50 mm 1 Protection against vertically falling drops of water
2 Protection against solid objects greater than 12 mm 2 Protection against dripping water when tilted up to 15 degrees
3 Protection against solid objects greater than 2.5 mm 3 Protection against spraying water
4 Protection against solid objects greater than 1 mm 4 Protection against splashing water
5 Total protection against dust—limited ingress (dust protected) 5 Protection against water jets
6 Total protection against dust (dust-tight) 6 Protection against heavy seas
7 Protection against the effects of immersion
8 Protection against submersion
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 ■ ■ ■ ■ ■ ————————————————————————
2 ■ ■ ■ ■ ■ ————————————————————————
3 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ————
3R ■ ■ ■ ■ ■ ■ ■ ■ —————————————————————
3S ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ————
4 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ——
4X ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ——
6 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ —
6P ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
12 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ———
13 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ———