Life of Electricians this is tremendously hard especially of the ones speaking English by not be Americans or English in origin.
IEC 60947-3 this standard gives definitions of current limits that one electrical switch can handle according to the type of load.
I got from China one panel type switch
LW28-20 (cam switch) and while I did made a correct choice about this be suitable for my application, I started having difficulties to identify in full all it technical parameters listed as:
AC-21A
AC-22A
AC-23A
AC-2
AC-3
AC-4
AC-15
IEC baptized all such specifications by the tittle :
electrical engineering utilization categoriesIt took me 30 minutes at trying to find of what I was looking because IEC description it is a weird selection of words.
Now I am very happy to know that my LW28-20/3 ( GB14048.5) this is 7.5KW 15A AC-23 = inductive loads
From the other hand I am going to ignore original product schematic
when advice's me to have SEX with the actuator.

No one is perfect
http://www.glele.com/common/godownloads.ashx?id=168Utilization categorieshttps://en.wikipedia.org/wiki/Utilization_categories