ABB TB806 3BSE008536R1 Modulebus Receiving Adaptor

Product Overview

The TB806 (3BSE008536R1) is a high-reliability Modulebus inlet adaptor engineered for the ABB S800 I/O system. It serves as the physical entry point for bus signals entering a remote I/O cluster from an extension cable. By utilizing a standardized male D-sub 25 interface, the TB806 ensures seamless logical communication across separate DIN rails, allowing engineers to expand control topologies while maintaining the performance integrity of the 800xA or Advant DCS architecture.

Technical Specifications

• Brand ABB

• Series S800 I/O

• Model Designation TB806

• Order Number 3BSE008536R1

• Component Category Modulebus Inlet / Extension Adaptor

• Connector Type DB25 (D-sub 25-pin), Male

• Coupling Requirement One unit required per TK801 extension cable

• Mounting Position Left-hand side of the I/O cluster

• Chassis Width 22 mm

• Chassis Height 109 mm

• Chassis Depth 25 mm

• Net Weight 0.046 kg

• HS Code 853690 (Electrical apparatus for connections)

• Customs Tariff Number 85369095

• Environmental Compliance RoHS (EU Directive 2011/65/EU)

• WEEE Category 5. Small Equipment (<50 cm)

Engineering Insights and Operational Logic

The TB806 (3BSE008536R1) functions as the receiver in an electrical bus extension pair. In a typical S800 configuration, the Modulebus signal is exported from a rail via a TB805 (Outlet), travels through a TK801 cable, and is injected into the subsequent rail via the TB806. The male D-sub 25 interface is optimized for low-impedance signal continuity, preventing data jitter across the extended bus. Its ultra-slim 22 mm profile is purposefully designed to maximize available DIN rail space for functional I/O modules while providing a ruggedized termination point for industrial field cabling.