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Operating Instruction
1. General
EN
Overview of IP-Code components (extract)
The protection classes are indicated by an abbreviation which is comprised of the letters IP
(International Protection) and which always remain the same, followed by two code num-
bers which represent the degree of protection. The first code number represents the degree
of protection against contact and foreign bodies, and the second represents the degree of
protection against damage caused by water penetration.
First
Protection against
number
human contact
0
Not protected
1
With back of hand
2
With finger
3
With tools
4
With thin wire
5
With thin wire
6
Complete
www.herthundbuss.com
Protection against
infiltration of solid objects
Not protected
Object with Ø over 50 mm
Object with Ø over 12.5 mm
Object with Ø over 2.5 mm
Object with Ø over 1 mm
Dust-proof
Dust-tight
99910400 | 99910420
Second
Protection against
number
infiltration of water
0
Not protected
1
Vertical drop
2
Drop at 15° angle
3
Spray water
4
Splashed water
4K
Splashed water,
at high pressure, only
for road vehicles
5
Jet water
6
Heavy jet water
6K
Heavy jet water,
at high pressure
(flooding), only for
road vehicles
7
Temporary immersion
8
Long-term immersion
9K
At high pressure/jet spray
cleaning, only for
road vehicles
8
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