Avtron A18123-1 Bridge Interface Board

AVTRON A18123-1 Bridge Interface Board, Rev. E, is a printed circuit module that serves as the interface between control signals and the bridge/power section in Avtron drive systems. This unit is described in listings as a Bridge Interface Board that ships with an A18639-1 PC Board Snubber, indicating an integrated snubber component for transient suppression across the bridge. Some retailer entries note that the A18123-1 configuration includes a transformer, reflecting its dual role in signaling and power handling within the interface assembly. The part is cataloged as discontinued by the manufacturer, so current availability is typically from secondary distributors or used-stock sellers. For repair or retrofit projects, listings commonly present the A18123-1 together with the A18639-1 snubber board, providing a matched pair for retrofitting older Avtron bridge interfaces. Availability from independent suppliers, such as Radwell or IMS Supply, confirms continued availability in the resale market despite the manufacturer discontinuation. This combination—Bridge Interface Board with snubber and transformer option—fits scenarios where replacing the entire drive is impractical and a like-for-like interchange is desired.