ABB UAD149A0001 3BHE014135R0001 Excitation Control Module | Unitrol® Power System Controller Product Overview The ABB UAD149A0001 (3BHE014135R0001) is a high-performance core excitation control module exclusively optimized for the Unitrol® power system controller series. As a critical component of ABB's professional power excitation management ecosystem, it undertakes core control and signal regulation tasks for generator excitation systems, delivering stable, intelligent and