The HAL 500-S from LEM is a Current Transducer with AC Input Current 500 A, DC Input Current -1000 to 1000 A, Output Current -0.025 to 0.025 A, Output Voltage -4 to 4 V, Supply Voltage +/- 15 V. Tags: Panel Mount, AC Current Transducer, DC Current Transducer. More details for HAL 500-S can be seen below.