I think by now, the popular opinion is that the acronyn "KASC" was probably a typo within the OP, or a transposition.
As JBD said above, the term is NOT within the Bussmann literature, as I use there literature (with permission) within a Fault Current CEU that I present. I also use 'UGLYS' within a class I teach at a local Vo-tech, and to my knowledge, it is not within same either.
All that said, let us NOT turn this thread into a 'flaming' issue!