Rated primary current of CT ( current transformer)

                                                                     Amperes

 ~ 0.5 

~ 1\2.5

~ 5

~ 10\12.5

~ 15\20\25

~ 30\40

~ 50\60

~ 75

~ 100\125

~ 150\200\250

~ 300\400

~ 500\600

~ 750\800

~ 1000\1250

~ 1500\2000\2500

~ 3000\4000

~ 5000\6000

~ 7500

~ 10000

all are the amp is rated primary current of CT ( current transformer)