The MCR-SL-CUC-400-I from Phoenix Contact is a Current Transducer with AC Input Current 0 to 400 A, DC Input Current 0 to 400 A, Output Current 0.004 to 0.02 A, Supply Voltage 20 to 30 V, Power Consumption 1.65 W. Tags: DIN Rail Mount, AC Current Transducer, DC Current Transducer. More details for MCR-SL-CUC-400-I can be seen below.