A.25KV/1225A、1500V/857x2A、400V/122A; B.400V/1225A、1500V/857x2A、25KV/122A; C.25KV/122A、1500V/857x2A、400V/1225A
A、AC100V B、AC500V C、AC400V
A.100~199 B.700~799 C.1100~1199