or you could do the same the easy way, for example
up to 100 amps, puts out a proportional low voltage analog signal
and they have them up to 2500 amps
http://www.digikey.com/product-search/en/sensors-transducers/current/1966573
or you could do the same the easy way, for example
up to 100 amps, puts out a proportional low voltage analog signal
and they have them up to 2500 amps
http://www.digikey.com/product-search/en/sensors-transducers/current/1966573