The HAT-3X150P4/A1 from Yuanxing Electronics is a Current Transducer with AC Input Current 150 to 180 A, Output Current 0.004 to 0.02 A, Supply Voltage -12 to 15 V, Accuracy 0.005, Frequency 0.4 kHz. Tags: Panel Mount, AC Current Transducer. More details for HAT-3X150P4/A1 can be seen below.