June 14th, 2009
An IP Rating also known as the International Protection Rating or sometimes interpreted as the Ingress Protection Rating, is a 2-digit numerical rating. This rating classifies the degrees of protection against dust, water, and impact that electrical equipment and enclosures can afford.
First Number
Protection against solid objects |
Second Number
Protection against liquids |
| Index |
Protection |
Index |
Protection |
| 0 |
No protection |
0 |
No protection |
| 1 |
Protected against solids objects over 50mm (e.g. accidental touch by hands) |
1 |
Protected against vertically falling drops of water |
| 2 |
Protected against solids objects over 12mm (e.g. fingers) |
2 |
Protected against direct sprays up to 15° from the vertical |
| 3 |
Protected against solids objects over 2.5mm (e.g. tools and wires) |
3 |
Protected against direct sprays up to 60° from the vertical |
| 4 |
Protected against solids objects over 1mm (e.g. tools, wires and small wires) |
4 |
Protected against sprays from all directions - limited ingress permitted |
| 5 |
Protected against dust - limited ingress (no harmful deposit) |
5 |
Protected against low pressure jets if water from all directions - limited ingress permitted |
| 6 |
Totally protected against dust |
6 |
Protected against strong jets of water e.g. for use on shipdecks - limited ingress permitted |
|
|
7 |
Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes |
|
|
8 |
Protected against long periods of immersion under pressure beyond 1m |
|
|
Illustrative IP Rating Guide
Tags: IP rating basics, IP rating tutorial, IP ratings explained
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