ABB TB100 Terminal Board Modules

Technical Dossier

Product Details And Specifications

ABB TB100 Series: Comprehensive Module Range and Technical Overview

The ABB TB100 Terminal Board series is a field-proven wiring interface platform deployed across heavy industrial installations worldwide, including petrochemical refineries, nuclear power facilities, chemical processing plants, and offshore platforms. Designed to interface field wiring with ABB's Advant, MOD 300, and Symphony Plus DCS backplane systems, the TB100 series provides a standardized, modular termination layer that decouples field cable management from controller module replacement. This architecture reduces maintenance downtime and eliminates the need to rewire field cables during module swap-outs — a critical operational requirement in continuous-process industries where unplanned shutdowns carry significant financial and safety consequences. The TB100 range is compatible with a broad spectrum of ABB I/O modules and has accumulated decades of installed base across facilities in Europe, North America, the Middle East, and Asia-Pacific.

The Evolution of TB100 Architecture

The TB100 terminal board concept was introduced as part of ABB's Advant Controller 400 series ecosystem in the late 1980s, providing a passive wiring termination layer between field instrumentation and the active I/O modules housed in the controller rack. Early TB100 variants were designed for direct rail mounting and supported screw-clamp termination for up to 40 field conductors per board. As ABB's DCS portfolio evolved through the MOD 300 and Master series platforms into the Symphony Plus generation, the TB100 form factor was retained for backward compatibility, allowing facilities to upgrade controller electronics without disturbing field wiring infrastructure — a significant total cost of ownership advantage. Later revisions introduced spring-clamp terminal options, improved EMC shielding provisions, and extended temperature ratings for harsh-environment installations. Compatibility between TB100 boards and successive generations of ABB I/O modules (AI810, AO810, DI810, DO810, and their V2 successors) has been maintained through consistent connector pitch and signal mapping standards. As of 2026, the TB100 series is in the mature/end-of-active-production phase for several sub-variants; ABB's current recommended migration path leads to the TB820 and TB840 terminal unit families within the Symphony Plus S+ I/O architecture. However, the installed base of TB100-dependent systems remains substantial, and long-term maintenance support for existing installations continues to be a primary market requirement.

TB100 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified TB100 series module range, classified by functional category. Each entry reflects a distinct hardware configuration within the ABB terminal board ecosystem.

Analog Input Termination

• TB100: Base terminal board for analog input module field wiring interface
• TB110: Terminal board for AI810 analog input, 8-channel, 4–20 mA field termination
• TB111: Terminal board for AI810V2, supports HART-enabled field device wiring
• TB115: High-density analog input termination board, 16-channel configuration
• TB116: Terminal board for thermocouple and RTD analog input modules

Analog Output Termination

• TB120: Terminal board for AO810 analog output module, 8-channel, 4–20 mA
• TB121: Terminal board for AO810V2 with HART pass-through wiring support
• TB125: High-density analog output termination, 16-channel field interface

Digital Input Termination

• TB130: Terminal board for DI810 digital input module, 24 VDC field wiring
• TB131: Terminal board for DI810 with isolated field power distribution rail
• TB135: Terminal board for DI830 digital input, 120 VAC field signal interface
• TB136: Terminal board for DI840 high-density digital input, 32-channel

Digital Output Termination

• TB140: Terminal board for DO810 digital output module, 24 VDC sourcing
• TB141: Terminal board for DO810 with relay output field wiring provisions
• TB145: Terminal board for DO840 high-density digital output, 32-channel

Communication & Specialty

• TB150: Terminal board for pulse input and frequency measurement modules
• TB160: Terminal board for redundant I/O module configurations, dual-port field wiring

Sourcing Hard-to-Find & Obsolete TB100 Parts

DriveKNMS maintains a dedicated inventory program for the ABB TB100 series, with particular focus on variants that have been discontinued from ABB's active production catalog. As the TB100 installed base ages, procurement teams at refineries, power stations, and chemical plants increasingly face extended lead times or outright unavailability through standard distribution channels. DriveKNMS sources TB100 terminal boards through a combination of manufacturer-authorized surplus channels, decommissioned plant asset recovery, and verified third-party refurbishment networks. All sourced units are cross-referenced against ABB's original part numbering system to confirm hardware revision compatibility with the target I/O module. For facilities operating under long-term service agreements or planning multi-year maintenance schedules, DriveKNMS offers bulk reservation and consignment stocking arrangements to ensure TB100 availability aligns with planned turnaround cycles.

Quality Control for the TB100 Range

Terminal boards in the TB100 series present specific inspection requirements distinct from active electronic modules. Quality control procedures at DriveKNMS for TB100 units include: visual inspection of all screw-clamp or spring-clamp terminal blocks for mechanical integrity, corrosion, and contact surface condition; continuity verification across all field-to-backplane signal paths using calibrated test fixtures mapped to ABB's published pin assignments; insulation resistance testing between adjacent signal channels and between signal conductors and chassis ground; verification of connector housing alignment and locking mechanism function for the backplane-side interface; and confirmation of hardware revision markings against the target I/O module compatibility matrix. Units exhibiting terminal block wear, connector damage, or insulation degradation are rejected and not offered for resale. Each TB100 unit shipped by DriveKNMS is accompanied by a test record documenting the inspection results.