The MCR-SL-S-400-U from Phoenix Contact is a Current Transducer with AC Input Current 0 to 400 A, Output Voltage 0 to 10 V, Supply Voltage 20 to 30 V, Power Consumption 1 W, Frequency 0.03 to 6 kHz. Tags: DIN Rail Mount, AC Current Transducer. More details for MCR-SL-S-400-U can be seen below.