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Digits (2), see table the side:
Describes the protection equipment terms protection against
contact and foreign bodies and against the harmful ingress water. The bodies
are connected protective earthing
conductor and protected via safe-
guard measure (e.
Letter (3):
In addition, the degree protection for people may indicated with a
letter after the two digits.597
Gira electrical installation systems
Protection types
I
Technical
information
Protection against contact, foreign bodies and water accordance
with 60529/DIN VDE 0470 Part 1
Depending the environmental conditions under which used,
equipment must protected against contact, the ingress foreign
bodies various sizes and ingress water. disconnection
from the power supply overload pro-
tective devices).
.
II Equipment with simple basic insulation
and additional insulation (double insula-
tion) with reinforced insulation (sin-
gle-stage insulation). There are three protection classes,
whose meanings are described the following table.
1 the equipment against the ingress vertically dripping water. metal covering of
devices) can energised. The so-called codes were
specified define the degree which piece equipment pro-
tected.
Protection class Symbol Description
I Equipment with simple basic insulation.
The codes are presented the following format:
IP identifier (1) digits (2) letter (3)
Identifier (1):
Symbol for the protection people against touching dangerous parts
and protection the equipment against the intrusion foreign bodies
and water.
IP C
(1) (2) (3)
The housing this equipment protects
2 people from accessing dangerous parts with their fingers and
protects the equipment against the ingress foreign bodies
with diameter least 12.
C people who insert tool with diameter 2. the basic insula-
tion fails, protection the event of
indirect contact thus ensured (protec-
tive measure: protective insulation).
III Protection against dangerous shock
currents ensured via the safety extra-
low voltage safety measure (alternating
current ≤50V, direct current ≤120V,
safety voltage source). g. stands for “international protection”.
Possible letters:
A Safe for the back the hand
B Safe for the fingers
C Protected against access with tool 100mm length
D Protected against access with wire 100mm length
Protection levels pursuant 529:
Digit Degree protection
Contact and
foreign-body protection
(1st digit)
Water protection
(2nd digit)
0 not present not present
1 against foreign bodies
>50mm against back
of hand
against vertically dripping
water
2 against foreign bodies
>12mm against con-
tact with finger
against water dripping
tilted angle to
15° the vertical
3 against foreign bodies
>2.5mm and larger
and length 100mm into the housing.5mm and larger.5mm against con-
tact with tool
against water sprayed at
an angle 60° to
the vertical
4 against foreign bodies
>1mm against contact
with wire
against water splashed
from all directions
5 against harmful dust
deposits the inside
against water jets from all
directions
6 against the ingress of
dust (dust-proof)
against powerful
water jets
7 with temporary
immersion
8 with continuous
immersion
Protection classes against excessive contact voltage
The type protection against dangerous shock currents identified via
a protection-class specification.
If fault occurs the basic insulation,
the body (e
