I am having the same “abnormal current (scp)” fault using a Zencar evse. The car will charge up by some amount and then the charger will cut out on a fault. I’ve had it fault out after less than 30 minutes up to after a few hours of charging. So far, I’ve tried 2 different units and had the...
Your best bet in the US may be to buy a 3-pole disconnect and not use one of the poles. Here are a couple that might work for you:
NEMA Style ("knife" switch) - You will need to add a grounding block:
https://www.amazon.com/SIEMENS-GNF322-240-Volt-Non-Fused-General/dp/B005G95DDE
Here is a...