The transducers are based on compensating the magnetic field by a closed loop system. The MSA300 is used for the measurement of AC and DC currents with high galvanic isolation between the current carrying conductor and output of the sensor. The current transducer can handle pulsed currents. The MSA300 Series is specially designed for secure measuring of a permanent current up to 100 A. The current measuring range covers a bandwidth from -500 A...500 A.