IP rating for Power Connectors

[chb881999]

I was investigating IP rating and was curious if anyone had any information as to how electrical connectors are tested, mated or unmated. Most pin and socket style connectors have the female side well protected against ingress but the male pin side is typically wide open. Would each half have a different rating and another for when mated.
Any help appreciated.

 

[Plugman]

Most plugs and receptacles are rated as a mated unit. When a mfg advertises an IP rating it will usually be for the mated pair. Keep in mind that some styles require additional mechanical operations in order to achieve the highest IP rating. Other styles (brands) achieve the max rating automatically upon mating.

If a receptacle has a lid, it can also have an IP rating. The plugs are generally not rated since they should not carry power until mated with a receptacle. There are situations where an IP rating is desired for a plug (eg. mounted on a motor that is in a dirty application and is frequently unplugged). The plug would then be tested and IP rated with some sort of cap.

 

[chb881999]

Thanks for the advice, very interesting.