The HTB 300-P from LEM is a Current Transducer with AC Input Current -300 to 300 A, DC Input Current -600 to 600 A, Output Current 0.015 A, Output Voltage -4 to 4 V, Supply Voltage 12 to 15 V. Tags: PCB Mount, AC Current Transducer, DC Current Transducer. More details for HTB 300-P can be seen below.