Ismatec: IP (Ingress Protection) Rating for Equipment and Enclosures
A two-digit number (as specified in EN 60529) is used to provide an IP rating to a piece of electronic equipment or to an enclosure for electronic equipment.
The two digits represent two different forms of environmental influence:
- The first digit represents protection against ingress of solid objects
- The second digit represents protection against ingress of liquids
The larger the value of each digit, the greater the protection from that influence. As an example, a product rated as IP57 would be better protected against environmental factors than another similar product that was only rated as IP43.
| IP | First Digit: Protection Against Ingress of Solid Objects | Second Digit: Protection Against Ingress of Liquids |
|---|---|---|
| 0 | No protection | No protection |
| 1 | Protected against solid objects over 50 mm, e.g. hands, large tools. | Protected against vertically falling drops of water. |
| 2 | Protected against solid objects over 12 mm, e.g. hands, large tools. | Protected against direct sprays of water up to 15 ° from vertical. |
| 3 | Protected against solid objects over 2.5 mm, e.g. wire, small tools. | Protected against direct sprays of water up to 60 ° from vertical. |
| 4 | Protected against solid objects over 1.0 mm, e.g. wires. | Protected against water sprayed from any direction. Limited ingress permitted. |
| 5 | Limited protection against dust ingress (no harmful deposit) | Protected against low-pressure water jets from any direction. Limited ingress permitted. |
| 6 | Totally protected against dust ingress. | Protected against high-pressure water jets from any direction. Limited ingress permitted. |
| 7 | Protected against immersion between 15 cm and 1 m. | |
| 8 | Protected against long periods of immersion under pressure. |