The ABB 3BHE022455R1101 is identified by ABB as KS D211 B101: Input Coupling Unit ICU. It is an industrial interface/coupling unit used within ABB automation and control architectures. ABB’s product page confirms the part number, while available product records identify the KS D211 B101 designation.
This part is sometimes incorrectly advertised online as a PCI Express communication board or PLC processor. Those descriptions should be avoided. The more reliable identification is Input Coupling Unit (ICU).

🔧 Key Features
- ABB industrial automation interface unit
- KS D211 B101 designation
- Input coupling / signal interface function
- Compact modular construction
- Designed for ABB control-system applications
- Suitable for system maintenance and replacement
- Industrial cabinet installation
- Legacy ABB spare-part application
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model / Part No. | 3BHE022455R1101 |
| Type Designation | KS D211 B101 |
| Product Type | Input Coupling Unit ICU |
| Main Function | Input signal coupling / interface |
| Application | ABB Industrial Automation |
| System Interface | System-dependent |
| Communication | Configuration-dependent |
| Input Voltage | System-dependent |
| Output | System-dependent |
| Dimensions | Approx. 165 × 120 × 50 mm |
| Net Weight | Approx. 0.5 kg |
| Mounting | Industrial control cabinet / system assembly |
| Country of Origin | Switzerland |
| ABB Status | Discontinued according to secondary inventory records |
The published ABB-related product record gives dimensions of approximately 165 × 120 × 50 mm, a net weight of 0.5 kg, and Switzerland as the country of origin.
⚡ Functional Description
The Input Coupling Unit provides an interface between incoming field/system signals and the associated ABB control architecture. Its exact signal characteristics depend on the host system, so voltage, current, channel count, and communication specifications should not be assumed without the corresponding system documentation.
A useful identification point is the exact ABB catalog description:
KS D211 B101: Input Coupling Unit ICU.
🏭 Typical Applications
- ABB industrial automation systems
- Process-control equipment
- Industrial control cabinets
- Signal interface assemblies
- Legacy ABB installations
- Plant maintenance and retrofit projects
- Replacement of discontinued automation hardware
🔌 Installation & Configuration
- Verify 3BHE022455R1101 on the nameplate.
- Confirm the KS D211 B101 designation.
- Check the original cabinet/system position.
- Record all existing wiring before removal.
- Verify the associated ABB system documentation.
- Check supply and signal requirements.
- Install the replacement unit in the original position.
- Reconnect all interface wiring.
- Power up and check system diagnostics.
- Perform signal verification before returning the system to service.
🛠️ Commissioning Checklist
- Confirm part number
- Verify hardware revision
- Inspect connectors
- Check mounting
- Verify wiring
- Confirm supply voltage
- Check input signal transmission
- Review controller diagnostics
- Test associated I/O
- Complete system functional test
⚠️ Important Identification Note
There is conflicting information online for this part number. Some sellers call 3BHE022455R1101 a “PCI Express Communication Board,” while ABB-related records identify it as KS D211 B101 Input Coupling Unit ICU.
For a professional product listing, I recommend using the ABB catalog identification rather than the generic “PCI” description.
📦 Ordering Information
ABB 3BHE022455R1101 | KS D211 B101 | Input Coupling Unit ICU | ABB Industrial Automation Spare Part
Verify the complete part number, hardware revision, connector configuration, and host-system compatibility before installation.






