I'm not sure what you are plugging in but it looks like a "full boat" plug (3p wye with a neutral and a ground). I am not sure what the NEMA number is but I have seen them. Somebody screwed up and ordered a 100a full boat IEC309R for something once. I may still have it in my junk pile somewhere.
Not being able to read the specs and not recognizing it, I will speculate that it is used in North America. Probably meant for equipment used in a relatively clean and dry environment like a cleanroom or laboratory.
It is not a NEMA configuration. It might be a configuration related to OTHER approved types. It does look like a plug you might see on something from Europe but there are also Calofornia configurations too. I'd guess it is about a 30 amp plug with a ground, neutral and 3 phase conductors. Not a normal shore power configuration for RV or Boats. I'd guess data processing gear. but definitely something that needs a neutral.
It is not a NEMA configuration. It might be a configuration related to OTHER approved types. It does look like a plug you might see on something from Europe but there are also Calofornia configurations too. I'd guess it is about a 30 amp plug with a ground, neutral and 3 phase conductors. Not a normal shore power configuration for RV or Boats. I'd guess data processing gear. but definitely something that needs a neutral.
Calofornia?:D The "California configurations" are locking type & are noted when you you see a "CS"( California Standard) prefix in a catalog number.
What biz it is of the State of Caliifornia to establish configuration standards I dunno.......
Folks, Bear in mind that Paulusgnome (Mark) is from New Zealand and the fact that this plug has shielded pins (ie: if you look closely, there is a plastic coating that is part of the pins, IMO, I doubt that would ever fly in the US). To my way of thinking, them pins are only good for the carrying of 10A max, if that.
Not a worry, man. I had been thinking of the 4 pin plugs used in dimmable fluorescent installations. It was the actual configuration of the pins that threw me.