ABB 3BSE021456R1 Description Description ABB TB840 MODULEBUS OPTICAL CLUSTER MODEM FOR 1+1 REDUNDANT OPERATION Related products ABB 2TLA042023R0100 ABB ACS800-01-0003-3 ABB 3BSE008516R1 ABB 2TLA040037R0800 ABB 3BSE008510R1 ABB ACS60100203
