The HAL 500-S from LEM is a Current Transducer with AC Input Current 500 A, DC Input Current -1000 to 1000 A, Output Voltage -4 to 4 V, Supply Voltage -15 to 15 V, Accuracy 0.01. Tags: Panel Mount, AC Current Transducer, DC Current Transducer. More details for HAL 500-S can be seen below.