I'm still trying to find an active system to cut the power during over-current conditions (with selectable current values).

Meanwhile, an additional passive current limiter is easy to implement with plain incandescent light bulbs, you know, the old-school type with a tungsten filament. I measured the below bulb at about 360 ohms (cold) and it will increase during use, due to the heat, so it works almost like a "polyfuse".

The tricky part was to mount it to the wooden frame but I managed to find a decent system.

I "just need" to add more switches to bypass these loads... More switches, *sigh*...