ABB TB840A 3BSE037760R1 Modulebus Cluster Modem. Optical cluster modem for 1 + 1 redundant operation.
Model: TB840A
Product ID: 3BSE037760R1
Categories: S800 I/O
Brand: ABB
ABB S800 I/O is a comprehensive, distributed and modular process I/O system that communicates with parent controllers and PLCs over industry-standard fieldbus technology and therefore can be used with a wide range of process controllers from ABB and other vendors.