Optimizing control panel costs with a modular architecture

Adopting a modular design approach allows electrical OEMs to reduce costs while delivering future‑ready control panels that provide a flexible backbone for repeatable builds and custom projects.

Because site requirements can vary widely, electrical OEMs often treat every control panel project as a one‑off. Even when systems serve similar applications, designers start from scratch, tailoring layouts, wiring, and components to each site. As a result, engineering teams repeatedly recreate custom solutions while panel shops struggle with one‑off builds, both of which drive up OEM costs. When processes change, adding or moving loads can trigger significant downtime for the customer, especially when application requirements exceed current design limitations.

Modular architectures offer a practical way to balance cost control with the need for flexibility. Instead of investing time and effort in fully custom designs that are difficult to modify, OEMs can incorporate a common busbar backbone, then configure panels by swapping or adding plug-in devices. The result is a design that minimizes lifecycle costs, meets current and future customer needs, and creates a sustainable competitive advantage for the OEM.

Cost‑optimized, future-ready

Once the modular backbone is in place, the increased flexibility opens up significant cost-optimization opportunities for both the OEM and its customers.

Repeatable designs

Modular panel architectures cut OEM costs by turning custom panel work into repeatable, configurable builds that reuse the same core design instead of starting from scratch each time. By standardizing the backbone and configuring the system using plug-in modules, OEMs can reduce engineering hours, panel shop labor, and project risk, all of which improve margins.

Minimized footprint

Vertical, stackable busbar arrangements, such as ABB’s SMISSLINE TP, free up interior panel space by replacing bulky power distribution blocks and large cable bundles, allowing more components to fit in the same enclosure or enabling the use of smaller cabinets. Improved space utilization lowers enclosure and material costs and makes installations with constrained cabinet space easier to manage. In applications where floor space and panel footprint drive capital and facility costs, a more compact panel layout delivers both engineering and economic advantages.

Lower installation labor

Modular busbar systems can reduce installation labor by replacing much of the point-to-point wiring required in conventional designs. Miniature circuit breakers and other compatible devices that snap directly onto the busbar can shorten installation time and reduce assembly labor costs.

Reduced maintenance costs

The same modular design that simplifies assembly can also reduce maintenance expenses over the life of the panel. Because plug-in components can be replaced or modified without extensive rewiring, technicians can complete service work faster and with less disruption to adjacent circuits. Shorter service events can also reduce equipment downtime. For end users, that translates into lower maintenance labor requirements and fewer production interruptions, both of which contribute to overall cost savings.

Improved safety

A structured busbar keeps devices neatly organized and securely mounted, reducing wiring clutter that can lead to accidental contact or miswiring. IP20 touch-safe, plug-in components can be isolated and replaced without live terminations exposed across the panel, helping technicians work more confidently and lowering the risk of shock or arc-flash incidents during routine changes and troubleshooting. By reducing safety incidents, unplanned downtime, and equipment damage, a modular architecture helps the OEM’s customers avoid the medical, legal, and lost-production costs associated with electrical incidents.

Future-proof scalability

Modularity helps control engineering costs as customer requirements evolve. As loads change or new functions are needed, additional components can be integrated into the existing architecture more easily, without requiring a complete system redesign. This reduces engineering effort and makes it easier for OEMs to respond to change orders, future expansion, or customer-specific modifications. Likewise, customers can extend the life of existing infrastructure instead of investing in costly replacements to keep up with business demands.

Amplify your competitive edge

For OEMs, modular control panel architectures are more than an engineering convenience—they’re a way to build a healthier business model. By designing around a modular busbar, OEMs reduce per‑panel engineering, material, and assembly costs while still meeting diverse application requirements. At the same time, they help customers lower lifecycle expenses through smaller footprints, faster installs, simpler maintenance, and easier upgrades rather than full replacements. When an OEM can control its own costs and systematically reduce its customers’ costs as well, modularity stops being just a design choice and becomes a clear competitive advantage.

Authors

Lilly Neary, Product Marketing Manager – SMISSLINE TP, ProLine & Energy Efficiency Devices · ABB Electrification

Lilly Neary is a Product Marketing Manager at ABB Electrification, focused on SMISSLINE TP, ProLine, and energy efficiency devices within the Smart Power Division. She works with OEMs and panel builders to bring modular, space-saving power distribution solutions to market.