Logo for: Fibox

The IP classification of an enclosure stands for Ingress Protection. This two-digit code correlates to what an enclosure should not allow entry into the enclosure (ingress). Fibox has tested its products according to IEC 529 or EN 60529. The latter requires the second digit to be tested from class 6 upwards separately to each class level. Thus the double marking IP 66 / IP 67 indicates that the actual tests have been made for both levels.

The European standard for enclosures, EN 50298, also includes the IK impact test. This test is described in EN 50102. The data for impact-resistant is available for each Fibox enclosure.

If you need further help or have questions, contact Fibox today.

First Number
Protection against solid objects
Second Number
Protection against liquids
IK Code
Protection against mechanical impacts
IP Test IP Test IK Test
0 No protection 0 No protection 00 No protection
1 Protected against solid objects over 50 mm – e.g., accidental touch by hands 1 Protected against vertically falling drops of water 01-05 Impact <1 joule
2 Protected against solid objectsover 12 mm – e.g., fingers 2 Protected against direct sprays of water up to 15° from the vertical 06 Impact 1 joule
3 Protected against solid objects over 2,5 mm (tools + small wires) 3 Protected against sprays to 60° from the vertical 07 Impact 2 joule
4 Protected against solid objects over 1 mm (tools + small wires) 4 Protected against water sprayed from all directions – limited ingress permitted 08 Impact 5 joule
5 Protected against dust – limited ingress permitted (no harmful deposit) 5 Protected against low pressure jets of water from all directions – limited ingress permitted 09 Impact 10 joule
6 Totally protected against dust 6 Protected against strong jets of water – e.g., for use on shipdecks – limited ingress permitted 10 Impact 20 joule
    7 Protected against the affects of immersion between 15 cm and 1 m    
    8 Protected against long periods of immersion under pressure