How can I select a Toroid for a Circuit Breaker NS1000 3P Micro 2.0. ? Do I have to consider the rated Ampere of the breaker or the selection just depends on the cable diameter?
When selecting a toroid, the most important factor to consider is the rated current ( the default current passing though the toroid ) . This factor defines the cable diameter.
Therefore, you have to consider both factors when selecting a toroid.