The LF 306-S from LEM is a Current Transducer with AC Input Current 300 A, DC Input Current -500 to 500 A, Output Current 0.02 A, Supply Voltage - 12 to 15 V, Accuracy 0.004. Tags: Panel Mount, AC Current Transducer, DC Current Transducer. More details for LF 306-S can be seen below.