NEMA / IP Rating Cross Reference
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| NEMA | IPxx | Description |
|---|
|
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NEMA-1:
General Purpose - Indoor
|
IP20: Protection against solid
objects up to 12mm.
|
Type 1 enclosures are intended
for use indoors, primarily
to prevent accidental contact
with the enclosed equipment,
in areas where unusual service
conditions do not exist.
|
|
NEMA-3:
Dust tight, rain tight and
sleet resistant - Outdoor
|
IP64: Total protection against dust
and protection against spray
or water from every direction
|
Type 3 enclosures are intended
for use outdoors, to protect
the enclosed equipment
against windblown dust and
water. They are not sleet (ice)
proof.
|
|
NEMA-3R:
Rainproof and sleet resistant
- Outdoor
|
IP22: Protection against solid
objects over 12mm and
against direct spray up to 15°
from vertical.
|
Type 3R enclosures are
intended for use outdoors, to
protect against rain, and meet
the requirements of UL 508
"Rainproof enclosures". They
are not dust, snow nor sleet
proof.
|
|
NEMA-4:
Watertight and dust tight -
Indoor and outdoor
|
IP66: Total protection against dust
and protection against strong
jets of water.
|
Type 4 enclosures are intended
for use indoors or outdoors,
to protect the enclosed
equipment against splashing
water, seepage of water, and
severe external condensation.
They are sleet resistant but
not sleet (ice) proof.
|
|
NEMA-4X:
Watertight and dust tight -
Corrosion resistant -
Indoor and outdoor
|
IP66: Total protection against dust
and protection against strong
jets of water.
|
Type 4X enclosures have the
same provisions as Type 4
enclosures and, in addition,
are corrosion-resistant.
|
|
NEMA-12:
Industrial use, dust tight
and drip tight - Indoor
|
IP55: Protected against dust and
protection against low pressure
jets of water from every
direction.
|
Type 12 enclosures are
intended for use indoors, to
protect the enclosed equipment
against fibres, flyings,
lint, dust and dirt, and light
splashing, seepage, dripping
and external condensation of
non-corrosive liquids.
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