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Be Certain with BeldenBe Certain with Belden
International Protection Classes According to DIN EN 60529 (IEC 529/VDE 047 T1)
The International Electrotechnical
Commission (IEC)
is the international standards
and conformity assessment body for all elds of
electro technology.
IEC International Standard 60529 (Edition
2.1: 2001-02) is a classication of degrees of
protection provided by enclosures as a system
for specifying the enclosures of electrical
equipment on the basis of the degree of
protection provided by the enclosure.
Ingress Protection as it relates to sealing
against the entry of solid and liquid objects.
Complete details of this standard can be
obtained from the IEC. This uniform and widely
acknowledged classication system provides
equipment designers and specifying agents with
a convenient and reliable method of comparing
relative levels of sealing between competing
(connector) products. In its simplest form, the
classication system consists of the letters
“IP” followed by two separate digits, which
denoteincreasingly greater sealing from solid
objects and from water.
For example, a product rated as being sealed
to IP55 will provide some degree of protection
from penetration by dust and a jet spray
of water, but it would not be expected to
completely seal against all dust or being
immersed in water.
With an IP67 rating a product will be “dust
tight” and remain completely sealed when
immersed in water for 30 minutes. The chart
below clearly denes levels of IP ratings
and should be used as a guide during the
specication and design process.
Protection Against Solid Foreign Objects
Penetrating the Product.
IP 6 7
Ingress Protection First Index Figure Second Index Figure
Protection Against
Foreign Objects
Protection Against Water
1st Index
Number
Icon Brief Description Definition
0
No protection Not applicable
1
Protected against solid foreign objects
of 50 mm Ø and >
The object probe, sphere of 50 mm Ø,
shall not fully penetrate**
2
Protected against solid foreign objects
of 12.5 mm Ø and >
The object probe, sphere of 12.5 mm Ø,
shall not fully penetrate**
3
Protected against solid foreign objects
of 2.5 mm Ø and >
The object probe, sphere of 2.5 mm Ø,
shall not fully penetrate**
4
Protected against solid foreign objects
of 1.0 mm Ø and >
The object probe, sphere of 1.0 mm Ø,
shall not fully penetrate**
5
Dust protected Ingress of dust is not totally prevented, but dust shall not
penetrate in a quantity to interfere with satisfactory operation of
the apparatus or to impair safety.
6
Dust tight No ingress of dust
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