IP protection (contact protection, dust, water)

IP protection

The connector’s housing, sealing and locking mechanism protect the connection from external influences such as mechanical shocks, foreign bodies, humidity, dust, water or other fluids such as cleansing and cooling agents, oils, etc. The degree of protection the housing offers is explained in the IEC 60 529, DIN EN 60 529, standards that categorize enclosures according to foreign body and water protection. The following table shows the different degrees of protection.

IP protection index

First Index Figure

Foreign bodies protection

IP foreign bodies protection 0

No protection (against accidental contact, against solid foreign bodies)

IP foreign bodies protection 1

Protection against large foreign bodies (Ø > 50 mm), Protection against contact with any large area by hand

IP foreign bodies protection 2

Protection against medium sized foreign bodies (Ø > 12 mm), Protection against contact with the fingers

IP foreign bodies protection 3

Protection against small solid foreign bodies (Ø > 2.5 mm), Protection against tools, wires or similar objects with Ø > 2.5 mm

IP foreign bodies protection 4

Protection against grain-shaped foreign bodies (As 3 however Ø > 1 mm)

IP foreign bodies protection 5

Protection against injurious deposits of dust (Full protection against contact, Protection against interior injurious dust deposits)

IP foreign bodies protection 6

Protection against ingress of dust (Total protection against contact. Protection against penetration of dust)

Second Index Figure

Water protection


No protection against water

IP water protection 1

Drip-proof (Protection against vertical water drips)

IP water protection 2

Drip-proof (up to a 15° angle)

IP water protection 3

Spray-proof (Protection against diagonal water drips
(up to a 60° angle)

IP water protection 4

Splash-proof (Protection against splashed water from all directions)

IP water protection 5

Hose-proof (Protection against water - out of a nozzle -
from all directions)

IP water protection 6

Strong hose-proof (Protection against strong water - out of a nozzle -
from all directions)

IP water protection 7

Protected against temporary immersion

IP water protection 8

Protected against water pressure

IP water protection 9K

Protected against water from high-pressure / steam jet cleaners

Description according to IEC 60529, IPX9K acc. to ISO 20653

Further information

Industrial connectors Han® - Technical information
.pdf - 2 MB