The ABB TB852, also cataloged under manufacturing part number 3BSC950263R1, operates as a dedicated hardware component for physical-layer bus impedance matching, transmission line reflection suppression, and signal termination within redundant controller networks.
Hardware Specifications
Parameter
Specification
Model
TB852
Brand
ABB
Origin
Sweden
Weight
1.0 kg (Gross Shipping Weight)
Dimensions
Factory standard internal sub-module footprint
Operating Temp
Factory standard industrial ambient window
Power Consumption
Passive resistor termination circuit
Part Number
3BSC950263R1
Product Type
Module Termination Units
Component Class
RCU (Redundant Control Unit) Link Terminator
Mechanical Packaging
New & Original in Factory Packing
Industrial Control and Drives Backplane Communication Velocity
The TB852 serves as a critical network termination plug for the Redundant Control Unit (RCU) high-speed serial link, which synchronizes memory states between primary and backup AC 800M or related controllers. By placing a precise, matched resistive load at the physical boundary of the communication line, the terminator eliminates electrical wave reflections that occur when high-frequency pulses hit an open wire end. This precise impedance matching preserves wave-shape definition, enabling the RCU bus to run safely at its maximum backplane bus communication velocity.
