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- ABB Bailey
- ITCTU03/11
- Terminal Unit
- Sweden (SE)
- 170 x 120 x 70 mm
- 0.322 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 32
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Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The ABB Bailey ITCTU03/11 Terminal Unit is an advanced field termination and interface module used in ABB INFI 90 / Network 90 distributed control systems (DCS). It provides a structured connection point between field wiring and system I/O modules, and in some configurations it supports communication interface functions such as PROFIBUS integration and redundancy support.
This makes it more than a basic terminal block—it acts as a smart termination interface layer in ABB Bailey control architectures.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB (Bailey) |
| Model | ITCTU03/11 |
| Product Type | Terminal / Interface Unit |
| System | INFI 90 / Network 90 DCS |
| Function | Field signal termination & system interface |
| Communication Support | PROFIBUS DP (in supported configurations) |
| Redundancy | Supported in certain system setups |
| Input Voltage | 24 VDC (typical for interface operation) |
| Signal Type | Digital / communication / field I/O interfacing |
| Installation Type | Rack / cabinet-mounted module |
| Application | Field-to-system signal and network interfacing |
| Dimensions | 170 × 120 × 70 mm |
| Weight | 0.322 kg |
Function and Working Principle
The ITCTU03/11 operates as a hybrid termination and interface module, combining traditional wiring termination with communication-level integration.
Its core functions include:
- Providing termination points for field wiring connections
- Acting as an interface between DCS and field or remote devices
- Supporting structured signal routing to I/O modules
- Enabling PROFIBUS DP communication integration (system dependent)
- Supporting redundancy configurations for higher system availability
- Improving signal organization and reducing wiring complexity
Unlike simple terminal units, this model may participate in data communication pathways, depending on system architecture.
Role in Industrial Control Systems
Within ABB INFI 90 systems, the ITCTU03/11 belongs to the field interface and communication integration layer.
Typical responsibilities include:
- Field signal termination and routing
- Communication bridging (e.g., PROFIBUS networks where configured)
- Supporting redundant control system architecture
- Connecting external devices to DCS I/O subsystems
- Improving system modularity and maintainability
Industrial Applications
The ABB ITCTU03/11 is commonly used in:
- Power generation plants
- Oil and gas processing facilities
- Petrochemical and refinery systems
- Chemical manufacturing plants
- Water and wastewater treatment systems
- Industrial automation and process control environments
- Legacy ABB Bailey INFI 90 / Network 90 installations
Installation and System Integration
For proper operation:
- Install in ABB-approved termination or interface racks
- Ensure correct wiring according to system configuration diagrams
- Verify correct communication settings if used in PROFIBUS setups
- Maintain proper shielding and grounding for signal integrity
- Confirm redundancy configuration where applicable
- Perform routine inspection of terminals and connectors
Compatible System Components
The ITCTU03/11 typically works with:
- ABB Bailey I/O modules (IMASI, IMDSI, IMASI series)
- Controller modules (BRC / MFP series)
- PROFIBUS DP network devices (in supported systems)
- Field sensors and actuators
- System racks and termination assemblies
- Power modules (IPSYS, IPFLD series)
Recommended Alternative Models
| Model | Product Type | Key Feature | Application |
|---|---|---|---|
| ITCTU03/11 | Terminal / Interface Unit | Field + communication termination | ABB INFI 90 systems |
| ITCTU03 | Terminal Unit | Standard field termination | Basic signal routing |
| ITCTU11 | Termination Unit | Enhanced interface function | Advanced ABB systems |
| Modern ABB Remote I/O Interfaces | Smart interface modules | Diagnostics + network integration | Modern DCS platforms |
Key Advantages
- Combines field termination with communication interface capability
- Reduces wiring complexity in large control systems
- Supports modular system architecture
- Improves maintainability and troubleshooting efficiency
- Enhances system flexibility for networked configurations
- Compatible with ABB Bailey legacy systems
- Supports redundancy in critical installations
- Industrial-grade reliability for continuous operation
Technical FAQs
What is the main function of ITCTU03/11?
It provides field termination and system interface functions, and in some configurations supports communication integration like PROFIBUS.
Is it just a terminal block?
No. Compared to standard terminal units, it can also support system communication and redundancy features.
Does it process control logic?
No. It only handles signal termination and interfacing, not control processing.
Which systems use it?
It is used in ABB Bailey INFI 90 and Network 90 distributed control systems.
Conclusion
The ABB Bailey ITCTU03/11 Terminal Unit is an advanced interface component that combines traditional field termination with system communication capabilities. By improving wiring structure, supporting network integration, and enabling redundancy, it plays an important role in maintaining reliable and scalable ABB Bailey control system architectures.