ABB KSD211B

The ABB KSD211B  3BHE022455R1101 is an Input Coupling Unit (ICU) designed for ABB’s UNITROL 5000/6000 static excitation systems and medium-voltage drive systems. It serves as the critical signal conditioning and isolation interface between field sensors and the excitation controller, providing galvanic isolation to block ground loops and transients while ensuring accurate feedback for generator voltage regulation.