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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- FF
& FHP
models
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,
AHP-XE
& FHP-XE
models
Source: NEMA Publication
N0. 250, Part 1, Page 1
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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.
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Number
|
Level of protection
|
Number
|
Level of Protection
|
|
0
|
No protection
|
0
|
No protection
|
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1
|
Protection against objects over 50mm, accidental touch by hands
|
1
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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
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Protection against rain at angle of up to 60° from vertical
|
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4
|
Protection against objects over 1mm, small tools, wires, etc.
|
4
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Protection against splash from any direction
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5
|
Complete protection against contact. Protection against harmful
ingress and deposit of dust
|
5
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Protection against water jets from any direction
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6
|
Complete protection against contact. Protection against ingress of
dust
|
6
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Protection against heavy sea water
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7
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Protection against immersion in water under stated conditions of
pressure and time
|
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8
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Protection under indefinite immersion in water under specified
pressure
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Source: Hoffman® standards, page A.05
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