Common Misunderstandings In Designing The Short-circuit Breaking Capacity Of Low-voltage Pole-mounted Circuit Breakers

Some users believe that the design should be based on the operating short-circuit breaking capacity (Ics) of Lv Pole Mounted Circuit Breakers being greater than or equal to the expected short-circuit current of the line. In fact, this is a misunderstanding and unnecessary. This also makes their operating short-circuit breaking capacity mostly smaller than its ultimate short-circuit breaking capacity.