Copper, as a high-current conductive material, plays a vital role in electrical circuits by carrying current and connecting various components. It is an essential element behind both high and low voltage electrical systems, power distribution units, and electrolytic smelting processes. If the control cabinet is the "brain" of a system, then copper busbars act like the nervous system, linking different parts together to ensure smooth operation.
As user demands for control cabinets become more stringent, there is a growing need for more reliable, compact, and cost-effective power distribution solutions. Users want to save space, reduce installation time, lower costs, and boost productivity—challenges that traditional copper busbars struggle to meet. Enter ABB DBL power distribution terminals, which offer a flexible and innovative alternative. These terminals not only enhance efficiency but also provide greater flexibility in system design.
Gael Grenat, Global Product Manager at ABB Connectivity, explains that the DBL series was developed to simplify power distribution for customers. Compared to conventional copper bars, DBL installations are 80% faster, and they take up 50% less space. All connection points are concentrated within a single compact module, allowing users to easily expand their systems. With IP20 protection, DBL ensures safety and reliability. It supports both copper and aluminum wires and can be used in single-stage, multi-stage shunt, or sink configurations—essentially offering three functions in one product, saving 20%-30% in costs. Its modular design allows for flexible mounting options, including rail and panel installation.
While similar products exist on the market, ABB DBL stands out due to its thoughtful design and superior performance. From the very beginning, ABB engineers focused on every detail. The DBL cover provides all necessary technical data, such as maximum current, voltage, torque, and stripping length. The reversible cover allows access from two directions, making screw tightening easier. Each unit comes with printed tag cards (L1, L2, L3, N, PE, +, -) to simplify wiring identification. Additionally, the V0 flame-retardant plastic used in its construction ensures safety in high-current environments, meeting standards commonly found in railway and explosive settings.
The market potential for DBL power distribution terminals is vast, with global demand reaching hundreds of millions of RMB. Although development is led by French and Indian teams, the Chinese market is a key consideration. Local Chinese teams gather specific needs and customer feedback early in the design process, ensuring the product meets local requirements. Throughout the R&D phase, close collaboration with ABB China ensures alignment with market expectations.
Selecting the right DBL model is straightforward. Users should confirm three key parameters: input current ratings (80A–400A, with future expansion to 500A), cable cross-sections (1–3 wires from 2.5mm² to 185mm² on one side, and 4–12 wires from 2.5mm² to 35mm² on the other), and rated voltage (1000VAC/1500VDC IEC and 1000VAC/DCUL standards). DBL is ideal for automation, HVAC, machinery, and DC PV strings operating between 600V and 1500V.
Beyond meeting current needs, ABB continues to innovate in response to digital transformation. ABBAbility, a digital solution, aims to unlock value across industries by delivering real-time data through devices, systems, and platforms. At the 2017 Hannover Fair, ABB introduced eKover—a smart cover equipped with sensors and communication modules that monitor current and temperature data, sending it to the cloud for predictive maintenance and safety alerts.
eKover integrates seamlessly with ABBAbility’s Vision intelligent power distribution platform, Emax2 circuit breakers, and Ekip gateways. As Gael Grenat notes, this digital approach can be extended to other connected devices, driving innovation and creating new business value for customers.
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