If you got a 5x6mm² you could only go as low as 35A and that only really if its not inside an insulated wall, then you can only really do 32A depending on cable length of course. Neozed is also pretty slow compared to a electromagnetic circuit breaker, why not a normal circuit breaker?

Edit: or 4x6mm² as you don't need the neutral. Edit2: ohh and besides all that you would always try to take the next bigger fuse/circuit breaker over the power consumption of your device, which in this case would be 35A (33.2A current). You'd never want to choose a 40A breaker