Description
🔹 Product Description
The ABB 3BSE031155R1 BC810K02 is a CEX-Bus Interconnection Unit designed for ABB AC 800M controllers and System 800xA automation platforms. It is used to divide the CEX-Bus into separate communication segments, improving system availability, redundancy, and maintenance flexibility in industrial control systems.
The BC810K02 kit includes two BC810 interconnection units, two TP857 baseplates, one TK851 interconnection cable, and two TB850 CEX-Bus terminators. It supports redundant communication interfaces, online CPU replacement, and hot swap functions for high-availability automation applications.
This module is commonly applied in process industries, power generation, marine automation, and large-scale control systems based on ABB System 800xA and AC 800M architectures. The unit provides a reliable communication expansion method for redundant controller configurations.

3BSE031155R1 BC810K02
⚙️ Product Features
🔹 ABB AC 800M controller communication accessory.
🔹 CEX-Bus interconnection and segmentation function.
🔹 Supports redundant communication interface units.
🔹 Enables hot swap and online maintenance operations.
🔹 High-integrity system support.
🔹 External 24 V DC power supply.
🔹 Includes complete BC810K02 connection kit.
🔹 Designed for System 800xA automation environments.
🔹 Suitable for critical industrial control applications.
🔹 Supports marine and industrial certifications.
📋 Product Datasheet
| Parameter | Value |
|---|---|
| Brand | ABB |
| Model | BC810K02 |
| Article Number | 3BSE031155R1 |
| Series | AC 800M / System 800xA |
| Product Name | CEX-Bus Interconnection Unit |
| Product Type | Communication Interface Module |
| Application | Controller Redundancy & Bus Segmentation |
| Power Supply | 24 V DC (19.2–30 V DC) |
| Dimensions | 185 × 59 × 127.5 mm |
| Weight | Approx. 1.5 kg |
🔧 Application
The ABB BC810K02 is designed for automation systems requiring reliable controller communication and increased system availability.
Typical applications include:
🏭 Process automation systems
⚡ Power generation control
⚓ Marine automation systems
🏗 Industrial production lines
🛢 Oil and gas control systems
🔧 High-availability PLC/DCS architectures
The module helps separate CEX-Bus communication sections, allowing redundant controller configurations and simplified system maintenance.
🔌 System Integration
The BC810K02 operates as part of the ABB AC 800M controller ecosystem. It connects controller communication interfaces through the CEX-Bus architecture and improves availability by supporting redundant communication paths.
Before installation, check:
🔹 AC 800M controller model
🔹 CEX-Bus configuration
🔹 Redundancy architecture
🔹 24 V DC power supply
🔹 Cable and terminator installation
🔹 System software compatibility
Correct configuration is required to maintain controller communication and system redundancy.
❓ FAQ
Q1: What is ABB BC810K02 used for?
A1: It is a CEX-Bus Interconnection Unit used to expand and improve communication availability in ABB AC 800M automation systems.
Q2: What is the article number of BC810K02?
A2: The ABB article number is 3BSE031155R1.
Q3: Is BC810K02 a PLC CPU module?
A3: No. It is a communication accessory module used with ABB AC 800M controllers.
Q4: What communication bus does it support?
A4: It supports ABB CEX-Bus communication architecture.
Q5: What power supply does BC810K02 require?
A5: It requires a 24 V DC power supply with an operating range of approximately 19.2–30 V DC.
Q6: Does BC810K02 support hot swap?
A6: Yes. The module supports hot swap functions for improved system maintenance flexibility.
Q7: Which ABB systems use BC810K02?
A7: It is mainly used with ABB AC 800M controllers and System 800xA automation systems.
Q8: What should be checked before replacement?
A8: Verify the controller type, CEX-Bus wiring, redundancy configuration, power supply, and system parameters before installation.
⭐ Recommended ABB Models
- BC810K02 3BSE031155R1 – CEX-Bus Interconnection Unit.
- BC820K02 3BSE071500R1 – Advanced CEX-Bus Interconnection Unit.
- PM864AK01 3BSE018161R1 – AC 800M Controller CPU.
- PM865K02 3BSE031151R1 – High-performance AC 800M Controller.
- PM866AK01 3BSE076939R1 – Redundant Controller CPU.
- CI854AK01 3BSE030220R1 – PROFIBUS-DP Communication Interface.
- CI840A 3BSE041882R1 – S800 I/O Communication Interface.
- CI873K01 3BSE069836R1 – Ethernet Communication Interface.
- TU810V1 3BSE013234R1 – S800 I/O Terminal Unit.
- TB850 3BSC950193R1 – CEX-Bus Terminator Module.
🛠️ Installation Note
Confirm the complete ABB part number 3BSE031155R1 BC810K02 before installation. Check CEX-Bus connections, redundancy settings, controller compatibility, and power supply requirements to ensure stable operation in the existing automation system.
