GUIDE · IP RATING
IP65 vs. IP66
What is the difference?
Both IP65 and IP66 provide complete dust protection. The difference lies in the protection against water and can be crucial when choosing enclosures or cabinets.
What Does the IP Rating Mean?
The IP code consists of two digits that describe protection against dust and water
First Digit - Dust Cover
Shows how well the enclosure protects against dust and solid particles.
| Class | Protection |
|---|---|
| 5 | Dustproof |
| 6 | Dammtät |
Second Digit - Water Protection
Shows how well the enclosure protects against water.
| Class | Protection |
|---|---|
| 5 | Water jets from all directions |
| 6 | Strong water jets from all directions |
| 9K | The high-pressure washer |
IP Classes - Overview
IP65 vs IP66 - Quick Comparison
| Property | IP65 | IP66 |
|---|---|---|
| Dust cover | ✅ Airtight | ✅ Airtight |
| Water jets | ✅ Water jets from all directions | ✅ Water jets from all directions |
| Powerful water jets | ❌ Not tested | ✅ Protected against strong water jets |
| Outdoor environment | May work in some environments | Recommended |
| Marine environment | ❌ Not recommended | Recommended |
| Wash zone / high pressure | ⚠️ Limited protection | ✅ Suitable (not a hot high-pressure washer) |
Recommended IP rating per Environment
| Environment | Recommended IP |
|---|---|
| Indoor | IP54 – IP55 |
| Industry | IP65 |
| Outside | IP65 – IP66 |
| Wash zone / high pressure | IP66 – IP69K |
| Food industry | IP69K |
Tips!
Do not choose an IP rating higher than necessary, as it can increase the cost, weight, and size of your cabinet. Always adapt to the environment and requirements.
FAQ – Frequently Asked Questions about IP65 vs IP66
Can IP65 be used outdoors?
Do I always need IP66 for marine environments?
Yes, recommended for long life.
Do you need help choosing the right IP rating?
Are you unsure of what enclosure class your installation requires? We help you choose equipment cabinets and enclosures based on environment, water exposure, and other technical requirements.
