IK Rating

“IK” an international numeric classification for the degrees of protection provided by enclosures for electrical equipment against external mechanical impacts. It provides a means of specifying the capacity of an enclosure to protect its contents from external impacts. 

International standard IEC 62262:2002 (European standard EN 62262 )

IK code and impact energy

IK RatingDegree of protection
IK00 No protection
IK01Protected against 0.14 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 56 mm above impacted surface.
IK02Protected against 0.2 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 80 mm above impacted surface.
IK03Protected against 0.35 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 140 mm above impacted surface.
IK04Protected against 0.5 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 200 mm above impacted surface.
IK05Protected against 0.7 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 280 mm above impacted surface.
IK06Protected against 0.7 joules impact.
Equivalent to impact of 0.25 kg mass dropped from 280 mm above impacted surface.
IK07Protected against 2 joules impact.
Equivalent to impact of 0.5 kg mass dropped from 400 mm above impacted surface.
IK08 Protected against 5 joules impact.
Equivalent to impact of 1.7 kg mass dropped from 300 mm above impacted surface.
IK09Protected against 10 joules impact.
Equivalent to impact of 5 kg mass dropped from 200 mm above impacted surface.
IK10Protected against 20 joules impact.
Equivalent to impact of 5 kg mass dropped from 400 mm above impacted surface.

Impact test characteristics

IK codeIK00IK01 to IK05IP06IK07IK08IK09IK10
Impact energy (joules)*<11251020
R mm (radius of striking element*101025255050
Material*polyamide1polyamide1steel2steel2steel2steel2
Mass kg*0.20.50.51.755
Pendulum hammer*YesYesYesYesYesYes
Spring hammer*YesYesYesNoNoNo
Free fall hammer*NoNoYesYesYesYes