Impact Protection
IK Ratings are an international numeric classification to indicate 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 in accordance with IEC 62262:2002 and IEC 60068-2-75:1997.
IK00 - No Protection
IK1 - Protected against 0.14 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 2.2" (56 mm) above the impacted surface
IK2 - Protected against 0.2 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 3.2" (80 mm) above the impacted surface
IK3 - Protected against 0.35 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 5.5" (140 mm) above the impacted surface
IK4 - Protected against 0.5 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 7.9" (200 mm) above the impacted surface
IK5 - Protected against 0.7 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 11.0" (280 mm) above the impacted surface
IK6 - Protected against 1 joules of impact. Equivalent to the impact of a 0.55 lb (0.25 kg) mass dropped from 15.8" (400 mm) above the impacted surface
IK7 - Protected against 2 joules of impact. Equivalent to the impact of a 1.1 lb (0.5 kg) mass dropped from 15.8" (400 mm) above the impacted surface
IK8 - Protected against 5 joules of impact. Equivalent to the impact of a 3.75 lb (1.7 kg) mass dropped from 11.8" (300 mm) above the impacted surface
IK9 - Protected against 10 joules of impact. Equivalent to the impact of a 11.0 lb (5 kg) mass dropped from 7.9" (200 mm) above the impacted surface
IK10 - Protected against 20 joules of impact. Equivalent to the impact of a 11.0 lb (5 kg) mass dropped from 15.8" (400 mm) above the impacted surface