Three phase + Ground and a fucking interlock pin. Loving it.
Now we're just waiting for PSUs to provide a 400V rail with matching connector. Corsair, you wanna be first to the market?
There's no interlock pin on these. The 5th is a neutral. Hubbell makes a few versions of these with an interlock system (these, but these are just 3 phase 208v plugs with ground and neutral.
The one on the tip of the plug is a locking nub, proper outlets have a power switch that will only allow the plug to be removed when switched off, otherwise mechanically locking it into the outlet.
That is mostly there for another reason, to distinguish between different voltages.
When a connector is meant for a different voltage the Earth connector (which is thicker than the rest) gets moved along the circle so it would be impossible to plug it into one with a different voltage. The nub stops you from just turning the plug to make it fit.
Greetings from Germany from someone who has used these quite a few times, mostly 16A and 32A variants and has never seen a locking one.
I may have misspoke, the cord cap is capable of being locked in, but the receptacle does not have any sort of locking mechanism, it's just a receptacle outlet. The only ones that have the interlock are the ones with a switch lever or knob attached to the unit.
Hope PCPartPicker lets you factor in the cost of calling your power company and asking them to wire up your house for 3 Phase soon.
I’ve used those for 208V 60-amp 3-phase power to racks in our Datacenter. Capable of supplying almost 18kW… those things are monster.
Trying to get a sense of scale, the 4 screw points on the red retainer look like 1 1/4in.
So are the prongs like the size of a thumb? 😳
Maybe a pinky.
But still, these are normally used for metal lathes and other big workshop machines like this.
I've never noticed one but now aware, expect to start seeing them everywhere hiding in plain sight
You don’t generally see them in the US until you get to Industrial/Datacenter level. Since the US tends to use NEMA standards, for example for a 220V dryer/EV charger we’ll use a NEMA 14-50 plug.
ppl make this joke literally every time a new GPU generation comes out but i still laugh every time