ABB TB846 3BSE021439R1 Termination Unit – S800 I/O Series

Technical Dossier

Product Details And Specifications

ABB TB846 3BSE021439R1 Termination Unit: Supply Continuity Strategy for Mission-Critical Automation Assets

The ABB TB846 (Part No. 3BSE021439R1) is a field termination unit designed for the ABB S800 I/O system, widely deployed in process automation across oil & gas, pulp & paper, power generation, and chemical processing industries. As ABB progressively transitions its installed base toward newer I/O architectures, sourcing verified TB846 units has become a measurable procurement risk for plant engineers managing legacy AC800M DCS environments.

This page is structured as a procurement decision guide — not a marketing brochure. If you are evaluating whether to source this part, repair an existing unit, or qualify a substitute, the sections below address the real cost and risk variables your team needs to quantify.

Procurement Specifications

Avoid these common procurement pitfalls:

Every ABB TB846 3BSE021439R1 unit shipped by DriveKNMS is subject to the following quality and compliance protocol:

DriveKNMS operates as a specialized industrial automation parts distributor with a sourcing network spanning Europe, North America, and Asia. Our value proposition is built on three operational capabilities that matter to B2B procurement teams:

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.