The IK Code, or impact rating, is 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 is defined in the European Standard EN 62262.

EN 62262 also specifies the way enclosures should be mounted when tests are carried out, the atmospheric conditions that should prevail, the number of impacts (5) and their (even) distribution, and the size, style, material, dimensions etc. of the various types of hammer designed to produce the energy levels required.
 


IK Code and Impact Energy

IK Code
Impact Energy (Joules)
IK00

None

IK01

0.14

IK02

0.20

IK03

0.35

IK04

0.50

IK05

0.70

IK06

1

IK07

2

IK08

5

IK09

10

IK10

20


Impact Test Characteristics

IK Code
Impact Energy (Joules)
Radius of Striking Element (mm)
Material
Mass (kg)
Pendulum Hammer
Spring Hammer
Free Fall Hammer
IK00

N/A

N/A

N/A

N/A

N/A

N/A

N/A

IK01 - IK05

<1

10

Polyamide

0.2

Yes

Yes

No

IK06

1

10

Polyamide

0.5

Yes

Yes

No

IK07

2

25

Steel

0.5

Yes

Yes

Yes

IK08

5

25

Steel

1.7

Yes

No

Yes

IK09

10

50

Steel

5

Yes

No

Yes

IK10

20

50

Steel

5

Yes

No

Yes