Measurement Fundamentals

Enclosure Ratings

Enclosure ratings are set based on IEC (International Electrotechnical Commission) standards.

IP○●
IP: Ingress Protection
○: Protection against intrusion of body parts and solid objects
●: Protection against intrusion of water

Enclosure Ratings and Their Degree of Protection

Protection Against Intrusion of Body Parts and Solid Objects

Grade Degree of protection
IP0● No protection.
IP1●
Protected against hands and other solid foreign objects (ø50 mm and greater).
IP2●
Protected against fingertips and other solid foreign objects (ø12 mm and greater).
IP3●
Protected against tools, wires, and other solid foreign objects (ø2.5 mm and greater).
IP4●
Protected against tools, wires, and other solid foreign objects (ø1.0 mm and greater).
IP5●
Protected from intrusion of dust at an amount that would interfere with normal operation.
IP6●
Dust-tight.

Protection Against Intrusion of Water

Grade Degree of protection
IP○0 No protection.
IP○1
Protected against vertically falling water drops.
IP○2
Protected against vertically falling water drops when enclosure is tilted up to 15°.
IP○3
Protected against vertically falling water drops when enclosure is tilted up to 60°.
IP○4
Protected against water splashed against the enclosure from any direction.
IP○5
Protected against water projected in jets from any direction.
IP○6
Protected against water projected in powerful jets from any direction.
IP○7
Protected against temporary immersion in water.
IP○8
Protected against the effects of continuous immersion in water.

Written example: IP68 = Product that features a dust-tight structure while being protected against the effects of continuous immersion in water.

Enclosure Rating Combinations

Protection Against Intrusion of Water

0 1 2 3 4 5 6 7 8
0 IP00
1 IP10 IP11 IP12
2 IP20 IP21 IP22 IP23
3 IP30 IP31 IP32 IP33 IP34
4 IP40 IP41 IP42 IP43 IP44
5 IP50 IP51 IP52 IP53 IP54 IP55
6 IP60 IP64 IP65 IP66 IP67 IP68

INDEX