The IK rating classifies the level of protection that electrical appliances provide against mechanic impacts from outside. It is defined by standard IEC 62262. The degree of mechanical protection is identified by a code that consists of the letters IK followed by two digits:
| Code | Impact energy | Test |
| 00 | Non-protected | |
| 01 | Impact energy: 0,150 joules | Resistant against an impact from an object of 0.44lbs (200 grams) thrown from a distance of 2.9¨ (7.5 cm) |
| 02 | Impact energy: 0,200 joules | Resistant against an impact from an object of 0.44lbs (200 grams) thrown from a distance of 3.9¨ (10 cm) |
| 03 | Impact energy: 0,350 joules | Resistant against an impact from an object of 0.44lbs (200 grams) thrown from a distance of 6.9¨ (17.5 cm) |
| 04 | Impact energy: 0,500 joules | Resistant against an impact from an object of 0.44lbs (200 grams) thrown from a distance of 9.8¨ (25 cm) |
| 05 | Impact energy: 0,700 joules | Resistant against an impact from an object of 0.44lbs (200 grams) thrown from a distance of 13.8¨ (35 cm) |
| 06 | Impact energy: 1,00 joules | Resistant against an impact from an object of 1.1lbs (500 grams) thrown from a distance of 7.9” (20 cm) |
| 07 | Impact energy: 2,00 joules | Resistant against an impact from an object of 1.1lbs (500 grams) thrown from a distance of 15.7¨ (40 cm) |
| 08 | Impact energy: 5,00 joules | Resistant against an impact from an object of 3.8lbs (1.7 kg) thrown from a distance of 11.6¨ (29.5 cm) |
| 09 | Impact energy: 10,00 joules | Resistant against an impact from an object of 11lbs (5 kg) thrown from a distance of 7.9¨ (20 cm) |
| 10 | Impact energy: 20,00 joules | Resistant against an impact from an object of 11lbs (5 kg) thrown from a distance of 15.7¨ (40 cm) |
