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The ABB HESG447440R1 (70BK03C-E) is a specialized bus coupling module engineered for the Procontrol P13 distributed control system. This module serves as a critical communication interface, enabling seamless data exchange between the Procontrol P13 architecture and external peripheral devices via the RS232 serial communication standard. It is a robust solution designed for high-availability industrial environments, including power generation and large-scale industrial automation.
This module is widely utilized in power plant automation, including fossil fuel, gas turbine, combined cycle, hydropower, and nuclear power facilities. It is essential for applications requiring reliable turbine control, open and closed-loop control, and substation management within the Procontrol P13 ecosystem.
| Model | HESG447440R1 / 70BK03C-E |
| Manufacturer | ABB |
| System | Procontrol P13 |
| Communication | RS232 |
| Power Supply | 24 V DC |
| Current Consumption | 166 mA (typical) |
| Baud Rate | 300 – 19,200 bit/s |
| Isolation | 1500 V DC (Bus-to-Serial) |
| Operating Temperature | -40 degC to +70 degC |
| Storage Temperature | -55 degC to +85 degC |
| Humidity | 0 – 95% RH (non-condensing) |
This module acts as a communication bridge, allowing the Procontrol P13 DCS to interface with external equipment using RS232 serial protocols.
The 70BK03C-E is specifically designed for the Procontrol P13 platform. Please consult your system documentation or hardware configuration manual to verify compatibility with your specific rack setup.
Even if the manufacturer has declared the part End-Of-Life, we continue to provide support and supply for this component to ensure the continued operation of your legacy Procontrol P13 installations.

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All parts are sourced from reputable manufacturers and undergo thorough quality checks.
Extensive stock of industrial automation and discontinued parts, ready for immediate shipment.
Every product — including obsolete items — is covered by a 12-month warranty and 30-day return guarantee.
All product names, trademarks, brands, and logos mentioned on this website are the property of their respective owners.These names and trademarks are used for identification and reference purposes only.We are an independent supplier of industrial automation spare parts.We are not an authorized distributor, dealer, or representative of any manufacturer.Products supplied may include surplus inventory or unused items.We do not claim any affiliation with or endorsement by the original manufacturers.