ABB 6634688G1 Circuit Board Assembly

ABB 6634688G1 is a Bailey/ABB termination motherboard assembly for the Infi 90 family of industrial controllers, functioning as the primary circuit board within the Bailey termination backplane. Catalog entries consistently refer to the part as 6634688G1 MOTHERBOARD ASSEMBLY and describe it as a 6634688G1 Termination Motherboard or Circuit Board, confirming its role as the main motherboard in the Infi 90 system. Numerous vendors—ABB Bailey spare parts catalogs, ClassicAutomation, York Controls, Platinum International, and RADWELL—list the model by the same number and identify it as a Bailey/ABB Infi 90 motherboard, underscoring its status as a replacement part within that platform.