Hello everyone,
I would also like to do this update, but how do the 2-pole magnetic contacts hold up? The original 4-pole magnetic contact is designed as 40A ac7-a and ac7-b 22 A. The 2-pole magnetic contacts used are 25A ac7-a, but with ac7-b a maximum of 10A. In 1/3 phase you should therefore use these with a maximum charging capacity of 2500W. There are heavier 2-pole magnetic contacts for sale, but they have a width of 35 mm, which means that 2 will not fit in the casing.