... circuit breaking currentka16, 20, 25, 31.5, 40, 50rated short-circuit making current (peak value)ka40 ... cubicle body, feature with high-precision, light weight, high strength and interchangeability of parts, is made ... , which is processed by CNC machine tool and advanced multiple fold craft, also is ... position for working and testing, each one has devices of positioning and displaying, which is safe and ...