The IP Code, or Ingress Protection Code, IEC standard 60529 classifies and rates the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and water. It is published by the International Electrotechnical Commission (IEC). The equivalent European standard is EN 60529.
The IP68 is the highest level of connector waterproof rating. Everyone knows, look at the waterproof performance of the waterproof connector, mainly look at the two digits XX behind the IPXX, the first digit X is from 0 to 6, the highest level is 6; the second digit X is from 0 to 8, the highest level is 8; therefore, the connector’s highest waterproof rating is IP68. In other words, the IP68 connector is the highest standard waterproof connector.
IP protection level
The first digit indicates the dust indicator:
A code system that indicates the degree of protection that the enclosure is close to dangerous parts, prevents the entry of solid foreign objects or water, and additional information related to these guards.
| Digit | Scope of protection | description |
| 0 | No protection | No special protection for people or things outside |
| 1 | Prevent the intrusion of solid foreign objects larger than 50mm | Prevents the human body (such as the palm) from coming into contact with the internal parts of the appliance due to accidents, preventing the invasion of foreign objects of larger size (greater than 50mm in diameter) |
| 2 | Prevent the intrusion of solid foreign objects greater than 12.5mm | Prevent human fingers from coming into contact with parts inside the appliance to prevent intrusion of medium-sized (larger than 12.5mm diameter) foreign objects |
| 3 | Prevent the intrusion of solid foreign objects larger than 2.5mm | Prevents intrusion of tools, wires, and similar small foreign objects with a diameter or thickness greater than 2.5 mm into contact with parts inside the appliance |
| 4 | Prevent the intrusion of solid foreign objects larger than 1.0mm | Prevents intrusion of tools, wires, and similar small foreign objects with a diameter or thickness greater than 1.0 mm into contact with parts inside the appliance |
| 5 | Prevent foreign objects and dust | Completely prevent the invasion of foreign objects, although it cannot completely prevent dust from invading, the intrusion of dust will not affect the normal operation of the electrical appliances |
| 6 | Prevent foreign objects and dust | Completely prevent foreign objects and dust from intruding |
The second position indicates the waterproof indicator:
| Digit | Scope of protection | description |
| 0 | No protection | No special protection against water or moisture |
| 1 | Prevent water droplets from invading | Vertical drops of water (such as condensate) do not damage the appliance |
| 2 | Prevents water intrusion when tilted at 15 degrees | When the appliance is tilted vertically to 15 degrees, dripping water will not cause damage to the appliance. |
| 3 | Prevent the intrusion of sprayed water | Prevent rain or prevent water sprayed in the direction of vertical angle less than 60 degrees from invading the appliance and causing damage |
| 4 | Prevent splashing water from invading | Prevent water from splashing in all directions from invading the appliance and causing damage |
| 5 | Prevent jetted water from intruding | Prevents water from the nozzles from coming in all directions from invading the appliance and causing damage |
| 6 | Prevent large waves from invading | Electrical appliances installed on the deck to prevent damage caused by large waves |
| 7 | Prevent water intrusion when immersed in water | The appliance is immersed in water for a certain period or the water pressure is below a certain standard to ensure that it will not be damaged by water immersion. |
| 8 | Prevent water intrusion when sunk | The appliance is sunk indefinitely under the specified water pressure to ensure that it is not damaged by water immersion. |