The IP standard (IEC529) represents the system's protection against dust and water. A typical label could be 'IP 42' or 'IP 25'. Both numbers represent a different information. See the following list:
The IP Ratings:
The first number defines the level of protection against penetration of solid objects into the housing. | The second number defines the level of protection against penetration of liquids into the housing. | ||
0 | No protection against contact or entry of solids. | 0 | No protection. |
1 | Protection against accidental contact by hand, but not deliberate contact. Protection against large objects (greater than 50mm). | 1 | Protection against drops of condensed water. Condensed water falling on housing shall have no effect. |
2 | Protection against contact by fingers. Protection against medium-size foreign objects (greater than 12mm). | 2 | Protection against drops of liquid. Drops of falling liquid shall have no effect when housing is tilted to 15 degrees from vertical. |
3 | Protection against contact by tools, wire, etc. Protection against small foreign objects (greater than 2.5mm). | 3 | Protection against rain. No harmful effect from rain at angle less than 60 degrees from vertical. |
4 | Protection against contact by small tools and wires. Protection against small foreign objects (greater than 1mm). | 4 | Protection against splashing from any direction. |
5 | Complete protection against contact with live or moving parts. Protection against harmful deposits of dust. | 5 | Protection against water jets from any direction. |
6 | Complete protection of live or moving parts. Protection against penetration of dust. | 6 | Protection against conditions on ships' decks. Water from heavy seas will not enter. |
7 | Protection against immersion in water. Water will not enter under stated conditions of pressure and time. | ||
8 | Protection against indefinite immersion in water under specified pressure. |