IK rating

The IK rating is an international standard that indicates how resistant a product is to impact. The European standard EN 62262 relates to IK ratings, to identify the degree of protection provided by enclosures for electrical equipment against external mechanical impacts.

IK Classification
The drop test rig in our laboratory can measure impacts of up to 250 joules of energy.

Strength as standard

Our experience has taught us that IK10 rating is inadequate against the sort of vandalism our products face on a regular basis. By testing to the EN60068-2-75 standard using a drop hammer (most lower IK tests use a pendulum hammer), we have extrapolated the data from the 20 joules (IK10) all the way up to 250 joules of energy (IK20).

IK rating

Pendulum Hammer Test EN 60068-2-75 : 2014

WeightHeightImpact energyClass
1.7 kg300mm5 JoulesIK 08
5 kg200mm10 JoulesIK 09
5 kg400mm20 JoulesIK 10

Please note that EN 60068-2-75 does not allocate codes above IK10. The following codes are extrapolated and assigned IK references by Designplan Lighting.

WeightHeightImpact energyClass
10 kg350mm35 JoulesIK 11
10 kg500mm50 JoulesIK 12
10 kg750mm75 JoulesIK 13
10 kg1000mm100 JoulesIK 14
10 kg1250mm125 JoulesIK 15
10 kg1500mm150 JoulesIK 16
10 kg1750mm175 JoulesIK 17
10 kg2000mm200 JoulesIK 18
10 kg2250mm225 JoulesIK 19
10 kg2500mm250 JoulesIK 20

The video below demonstrates how we use a drop test to test our luminaires for impact.

Further reading

Impact resistance goes hand-in-hand with ingress protection to ensure a luminaire can be installed in challenging environments such as an exposed coastal location for example. To find out more click on the link below.

How we ensure ingress protection (IP rating)