Polymers in Electronics: Market Report

Components and enclosures are allocated an ingress protection (IP) number which denotes their protection against the ingress of foreign bodies or water as shown in Table 3.1. It is important to note that the IP rating is also affected by the method of fixing used, method of sealing and cable entries, not just the enclosure itself.
| First Digit | Degree of Protection against Ingress of Solids | Second Digit | Degree of Protection against Ingress of Water |
|---|---|---|---|
| 0 | No protection against accidental contact, no protection against intrusion of solid foreign bodies. | 0 | No protection against water. |
| 1 | Protection against solid objects with diameter greater than 50 mm, hands or large tools for example | 1 | Protection against vertically falling water drips. |
| 2 | Protection against solid objects with diameter greater than 12 mm, hands or large tools for example. | 2 | Protection against direct sprays of water up to an angle of 15 from the vertical. |
| 3 | Protection against solid objects with diameter greater than 2.5 mm, wire or small tools for example. | 3 | Protection against direct sprays of water up to angle of 60 from the vertical. |
| 4 | Protection against solid objects with diameter greater than 1 mm, wires for example. | 4 | Protection against water sprayed from any direction limited ingress permitted. |
| 5 | Full protection against contact. Limited protection against interior detrimental dust deposition. | 5 | Protection against low pressure... |