Rated input current AC 50A, 100A, 400A AC/DC Accuracy 1.0 Input Impedance (R) approximate zero Linear measuring range 0 - 1.2 times of rated input current Over Load Capacity 30 times of rated input current, 5s Frequency range 25Hz~5kHz Isolation Voltage(Input/Output) 2500Vdc, for 1 minute Thermal drift 600ppm/ Ambient Temperature -25~+70 Mounting DIN Rail 35mm Mounting or screw mounting