What the S200-TB3 Does in Your PLC Rack
The ABB S200-TB3 is a terminal block interface that connects field wiring to the PLC I/O module — it is the physical termination point where sensors, actuators, and power supplies land before the signals reach the logic board. Listed under PLC I/O & Expansion Modules, this interface is designed for the ABB S200 series and mates with the corresponding I/O brain or expansion unit in the same family.
It remains available for both new designs and replacement of existing field terminations.