The AK 200 B420L from LEM is a Current Transducer with AC Input Current 100 to 200 A, Output Current 0.004 to 0.02 A, Supply Voltage -24 to 24 V, Accuracy 0.01, Frequency 0.02 to 0.1 kHz. Tags: Panel Mount, DIN Rail Mount, AC Current Transducer. More details for AK 200 B420L can be seen below.