IK ratings are defined as IKXX, where "XX" is a number from 00 to 10 indicating the degrees of protection provided by enclosures (including luminaires) against external mechanical impacts. The different IK ratings relate to the ability of an enclosure to resist impact energy levels measured in joules (J). IEC 62262 specifies how the enclosure must be mounted for testing, the atmospheric conditions required, the quantity and distribution of the test impacts and the impact hammer to be used for each level of IK rating.
| IK00 Non-protected |
| IK01 0.14 J |
| IK02 0.2 J |
| IK03 0.35 J |
| IP04 0.5 J |
| IK05 0.7 J |
| IK06 1 J |
| IK07 2 J |
| IK08 5 J |
| IK09 10 J |
|
IK10 20 J |
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