IK Ratings
IK Ratings are defined by international standard IEC 62262 (2002). They are 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. The IK Code was originally defined in European Standard BS EN 50102 (1995, amended 1998). Following its adoption as an international standard in 2002, the European standard was renumbered EN 62262.
Prior to the advent of the IK code, a third numeral had been occasionally added to the closely related IP Rating (Ingress Protection Rating), to indicate the level of impact protection — e.g. IP56(7).
The standard specifies the way enclosures should be mounted when tests are carried out, the atmospheric conditions that should prevail, the number of impacts and their distribution, and the size, style, material, dimensions etc. of the various types of hammer designed to produce the energy levels required.
Ratings are as follows:
IK code and impact energy values
| IK Code | IK00 | IK01 | IK02 | IK03 | IK04 | IK05 | IK06 | IK07 | IK08 | IK09 | IK10 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| IK CodeImpact Energy (joule) | IK00* | IK010.14 | IK020.2 | IK030.35 | IK040.5 | IK050.7 | IK061 | IK072 | IK085 | IK0910 | IK1020 |
*not protected according to the standard
Impact test characteristics
| IK code | IK00 | IK01 to IK05 | IK06 | IK07 | IK08 | IK09 | IK10 |
|---|---|---|---|---|---|---|---|
| IK codeImpact energy (joule) | IK00* | IK01 to IK05<1 | IK061 | IK072 | IK085 | IK0910 | IK1020 |
| IK codeRadius of striking element (mm) | IK00* | IK01 to IK0510 | IK0610 | IK0725 | IK0825 | IK0950 | IK1050 |
| IK codeMaterial | IK00* | IK01 to IK05polyamide1 | IK06polyamide1 | IK07steel2 | IK08steel2 | IK09steel2 | IK10steel2 |
| IK codeMass (kg) | IK00* | IK01 to IK050.2 | IK060.5 | IK070.5 | IK081.7 | IK095 | IK105 |
| IK codePendulum hammer | IK00* | IK01 to IK05Yes | IK06Yes | IK07Yes | IK08Yes | IK09Yes | IK10Yes |
| IK codeSpring hammer | IK00* | IK01 to IK05Yes | IK06Yes | IK07Yes | IK08No | IK09No | IK10No |
| IK codeFree-fall hammer | IK00* | IK01 to IK05No | IK06No | IK07Yes | IK08Yes | IK09Yes | IK10Yes |
*not protected according to the standard
1 R100 Rockwell hardness according to ISO 2039/2
2 Fc490-2 Rockwell hardness according to ISO 1052
