The HAT-50C4/A0 from Yuanxing Electronics is a Current Transducer with AC Input Current 50 to 60 A, Output Current 0 to 0.02 A, Supply Voltage -12 to 12 V, Accuracy 0.005, Frequency 0.4 kHz. Tags: Panel Mount, AC Current Transducer. More details for HAT-50C4/A0 can be seen below.