NEMA- 12
Type 12 enclosures are intended for indoor use primarily
to provide a degree of protection against dust, falling
dirt, and dripping non-corrosive liquids. Applies to
AHP
&
FHP models
Source: NEMA
Publication N0. 250, Part 1, Page 1
NEMA- 4X
Type 4X enclosures are intended for indoor and outdoor
use primarily to provide a degree of protection
against corrosion, windblown dust and rain, splashing
water, and hose directed water TECA products carrying
the "X" designation use Mil-Spec fans, o-ring sealed
power supplies, no exposed electronic components,
stud/gasket mounting and Mil-Spec finishes. Products
with the "XE" designation use sealed fans, sealed
components, stud/gasket mounting and Mil- Spec
finishes. They are designed to maintain the enclosure
rating and perform in the rated environment. Applies
to
AHP-X / XE &
FHP-XE
models
Source: NEMA
Publication N0. 250, Part 1, Page 1
IP Ratings
The IP (Ingress Protection)
standard describes a uniform system for classifying the
degrees of protection provided by the enclosures of
electrical equipment. The first number refers to the
level of protection against penetration of solid objects
into the enclosure. The second number refers to the
level of protection against penetration of liquids into
the enclosure.
|
Number |
Level of protection |
Number |
Level of Protection |
|
0 |
No
protection |
0 |
No
protection |
|
1 |
Protection against objects over 50mm, accidental
touch by hands |
1 |
Protection against vertically dripping water |
|
2 |
Protection against objects over 12mm, protection
against touch by fingers |
2 |
Protection against liquid drops at 15° from vertical |
|
3 |
Protection against objects over 2.5mm, tools, wires,
etc. |
3 |
Protection against rain at angle of up to 60° from
vertical |
|
4 |
Protection against objects over 1mm, small tools,
wires, etc. |
4 |
Protection against splash from any direction |
|
5 |
Complete protection against contact. Protection
against harmful ingress and deposit of dust |
5 |
Protection against water jets from any direction |
|
6 |
Complete protection against contact. Protection
against ingress of dust |
6 |
Protection against heavy sea water |
| |
|
7 |
Protection against immersion in water under stated
conditions of pressure and time |
| |
|
8 |
Protection under indefinite immersion in water under
specified pressure |
Source: Hoffman®
standards, page A.05
NEMA & IP Ratings
Comparison
|
Enclosure NEMA Rating |
IP Rating |
|
1 |
10 |
|
2 |
11 |
|
3 |
54 |
|
4 |
56 |
|
4X |
66 |
|
6 |
67 |
|
12 |
52 |
|
13 |
54 |
Note: The comparison chart above is only an
approximation.
|
|
