用于扩大仪表测量电流范围准确度等级：2-4000A；0.5级;5000-10000A1级环境条-40℃～+60℃电压降:50mV75mV100mV20A,30A,50A,100A,200A,300A,400A,500A,600A,750A,1000A,2000A,3000A,4000A,5000A,6000A,7500A,10000A,12000A,15000A,20000A)