The ABB TU841 (3BSE020848R11) is a high-performance Module Termination Unit (MTU) designed for high-availability automation systems. It supports line redundancy and is optimized for use with redundant TB840/TB840A setups, ensuring robust signal distribution and fail-safe operation in critical process control applications.
Technical Configuration
The TU841 is engineered for flexibility and reliable communication within the ABB control architecture:
Redundancy Support:Fully supports line redundancy, ensuring seamless data flow in critical automation loops.
Compatibility:Specifically designed for integration with redundant TB840/TB840A controllers and single I/O configurations.
ModuleBus Distribution:Capable of distributing up to 1.5 A at 5 V and 1.5 A at 24 V to support downstream modules.
Mechanical Security:Equipped with 36 unique mechanical keying combinations to prevent improper module insertion and guarantee configuration safety.
Mounting Versatility:Can be installed in either vertical or horizontal orientations to accommodate diverse control cabinet layouts.
Specifications
Part Number:3BSE020848R11
ABB Type:TU841
Power Input:24 V DC (19.2 – 30 V range)
Power Dissipation:2.0 W
Rated Insulation Voltage:50 V
Dielectric Test Voltage:500 V AC
Wire Compatibility:0.2–2.5$mm^2$(Solid and Stranded) / 24–12 AWG
