Of course that can be utilised although it was obviously disconnected rather brutally. But buying a second hand charge point what should you expect?
The main concern I'd have is whether you have the small push switch that should be connected to the twisted pair of thin black wires - I can't see it in the photos.
I have no idea what those black wires are, I think it has been previously 'adjusted' by owner to take a current reading out of it? Or maybe add a timer feature, I was thinking about doing that myself. Remove them, and any odd looking component that might have been attached inside to something.
I put 6mm2 cores into one, as I made for it a long lead out to a commando socket, and it is actually quite tricky, there is only space for 4mm2 really.
It is bog simple.
The worst part of the job was that the warranty sticker got jammed into the star slot and I couldn't get a driver into it!!
They are all screw terminals inside. I recommend ferrule crimps to ensure you don't end up with lose strands from wire stuffing (I never approve of un-ferruled ends), but you have to thread the cores through the current sensor first before crimping them on as the current sensor is too small ID to take a 4/6mm core and a ferrule at the same time.
Agree with Donald, but I'd just add, check what those 2 black wires do before junking them. Some EVSEs have external switch to change from 16 to 32A; I believe this feature is usually on an internal switch on maybe ?Chargemaster? EVSEs, so it's possible this is a mod by previous person to take that switching capability outside the case.
If this is a 16/32A swap-over, you MUST make sure the wires involved are capable of 32A, before using that current rating! Who knows, this may have been a 16A EVSE originally with 16A wires, breakers, relays, whatever, but the circuitboard made with 16/32A switch set by mfr to suit whatever cables were used. That's safe. If it's been bodged to upgrade it to 32A without ALL the other bits upgraded to match, then it's bloody dangerous. Do take care, post pics here of what's going on inside if you're not sure.
The 2 black wires could also, (it's possible but unlikely I think) go from the box to a temperature-sensor outside, which could be a tiny thermistor about the size of a match-head. So try & work out what they're for before ignoring them!