The IP rating classifies the level of protection a metal or plastic push pull connector (or any other type of metal connectors or plastic water connectors) provides against the intrusion of solid objects (including body parts like hands and fingers), dust, accidental contact, and water as defined by the international standard IEC 60529. IP stands for "international protection” or "ingress protection" and is an international system for classifying the effectiveness of the sealed enclosures used in electrical systems. Ratings are standardized and consist of two digits and an optional third digit and/or letter.
Each digit indicates a different level of conformity for with the conditions enumerated in the tables below. If there is no protection rating assigned to one of the criteria, the digit is replaced with the letter X.First Digit
The first digit of the IP rating system signifies the degree to which the connection is protected against contact with hazardous moving parts, as well as the degree to which that equipment is protected against the ingress of solid foreign objects.
|1st Digit||Size of Object Protected From||Protection Against|
|0||---||No protection against contact with objects|
|1||> 50 mm||Large surface area of the body (hand) or other solid objects|
|2||> 12.0 mm||Fingers, etc.|
|3||> 2.5 mm||Tools, thick wires, etc.|
|4||> 1mm||Smaller wires, parts, screws, etc.|
|5||dust||An amount of dust that would interfere with equipment operations|
|6||dust tight/complete protection||Dust particles|
The second digit of the IP rating system signifies the degree to which the equipment inside the enclosure is protected against the harmful entry of various amounts and forms of liquid.
|2nd Digit||Type of Liquid Protection|
|1||Water dripping vertically|
|2||Water lightly spraying from an angle of no more than 15°|
|3||Water spraying at up to 60°|
|4||Water splashing from any angle|
|5||Water projected at any angle|
|6||Water projected by powerful jets or seas at any angle|
|7||Temporary immersion up to 1 m|
|8||Continuous immersion beyond 1m|
The third digit of the IP rating system signifies the degree to which the connection is protected against impact.
|3rd Digit||Protection against impact||Equivalent mass impact|
|1||0.225J||150g weight falling from 15cm height|
|2||0.375J||250g weight falling from 15cm height|
|3||0.5J||250g weight falling from 20cm height|
|4||2.0J||500g weight falling from 40cm height|
|5||6.0J||0.61183kg weight falling from 1m height|
|6||20.0J||2.0394kg weight falling from 1m height|
A push pull connector (or other metal connectors) and plastic water connectors can be further classified by additional optional letters that signify the level of protection against access to hazardous objects or body parts by humans.
|A||Back of hand|
Theses additional indications can be further explained using the letter classification listed below.
|H||High voltage device|
|M||Movement during water test|
|S||Stationary water test|
Using the IP rating system outlined above, a metal push pull connector with an IP rating of IP 32 would be protected against the intrusion of thick wires or tools and could withstand water spraying at a slight angle.