Compact and Modular Cells: Which is Best for Your Project?

Grupo Edmar
Oct 28
4 min read

October 23, 2025 - Compact and Modular Cells: Which is Best for Your Project?

Compact and Modular Cells: Which is Best for Your Project? Edmar — Compact and Modular Cells: Which is Best for Your Project?

What are Compact Cells and Modular Cells?

Before comparing, let's understand what we're talking about: Compact cubicles are prefabricated units that integrate all the necessary electrical components into a single, closed assembly. This includes circuit breakers, disconnectors, busbars, instrument transformers, and protection systems. They are designed to offer a ready-to-install, low-maintenance solution.

On the other hand, modular cells function as independent blocks that can be combined or expanded according to the system's needs. Each module performs a specific function (e.g., protection, measurement, or switching), and the system can be expanded simply by adding more modules.

In short:

Compact = integration and simplicity.
Modular = flexibility and adaptability.

Advantages of Compact Cells.

Compact cells have become a very popular solution in projects where reduced space and rapid installation are required.

Among its main advantages are:

Streamlined and reduced design: perfect for small areas, such as buildings or limited electrical rooms.
Reduced installation time: They come ready to connect, with predefined configurations.
Lower initial costs: due to its standardized design and mass production.
Less maintenance required: Since these are closed systems, the components are better protected from dust, moisture, and the external environment.
High reliability: fewer external connections means lower risk of failure.

Practical example: A shopping center with a stable electrical load and no expansion plans can opt for compact cells, as they provide reliability, take up little space, and do not require constant maintenance.

Advantages of Modular Cells.

Modular cells , on the other hand, are the favorites in projects seeking future growth or operational flexibility .

Its main benefits include:

Scalability: allows the system to be easily expanded by adding more modules.
Ease of maintenance: If a module fails, it can be replaced without affecting the entire installation.
Greater versatility: they adapt to different configurations, voltages or technical requirements.
Better lifecycle utilization: the system can be updated or technologically adapted without being completely replaced.
Operational safety: Modular isolation reduces electrical risks by only intervening on the necessary part.

Example: In an industrial plant with a planned five-year expansion, a modular cell allows new equipment to be added easily, without having to redesign the entire electrical network.

Factors you should evaluate before deciding.

Making the right decision requires analyzing some key aspects that can influence both the initial cost and long-term operation:

Available space: Compact units are ideal for small spaces, while modular units require more space but offer the flexibility to expand.
Initial budget vs. long-term investment: Compact models are usually cheaper upfront, but modular models can save future costs by making upgrades easier.
Maintenance and operation : If you don't have specialized technical personnel, the compact option may be more practical. Modular options, on the other hand, are better if you want localized and rapid maintenance.
Future growth: If your project involves expansion, automation, or integration with renewable energy, modular systems offer greater adaptability.
Environment and environmental conditions: Compact models are more sealed and resistant to harsh or dusty environments, while modular models work better in controlled environments.

When is it really worth choosing a compact cell?

Opting for a compact cell makes sense in scenarios where the electrical installation won't change significantly over time. Some examples where they are ideal:

Residential and commercial buildings with constant electrical load.
Urban distribution substations , where space is limited.
Small or medium-sized data centers with predictable electrical demand.
Temporary or modular projects , such as trade fairs or mobile installations.

Furthermore, its ease of assembly and low maintenance requirements make it a cost-effective option for projects seeking efficiency and reliability without overcomplications.

When is it best to choose a modular cell?

Modular cells are recommended when a dynamic, growth-ready infrastructure is required. Common cases:

Large-scale or growing industrial plants .
Photovoltaic or wind farms , where expansions are common.
Logistics and manufacturing centers that need to frequently modify loads or lines.
Medium and high voltage substations with multiple feeds.

These cells also allow the implementation of modern automation, remote monitoring and predictive maintenance technologies, ideal for projects seeking to integrate smart grids .

Costs, Maintenance and Useful Life.

A common mistake is to evaluate only the purchase price , when what really matters is the total cost of ownership (TCO) . Key aspects:

Initial cost: Compact models are usually cheaper to purchase.
Maintenance: Modular units can reduce long-term costs by being easier to repair and upgrade.
Spare parts availability: Compact models may have limitations on specific components, while modular models accept different manufacturers.
Durability: Both offer a good lifespan (20-30 years on average), but modular systems allow individual parts to be replaced, extending the overall system.
Production downtime: In industrial environments, every hour of downtime costs money. At this point, modularity can be a major advantage.

Having the technical support of Grupo Edmar guarantees not only the right selection, but also support for preventive maintenance, support, and technological updates.

Conclusion, Which One Is Best for Your Project?

There is no universal answer, but rather a strategic choice based on your needs .

If you are looking for simplicity, low initial cost and reduced space , choose compact cells .
If you prioritize flexibility, growth and easy maintenance , opt for modular cells .

Both are efficient and safe solutions, provided they are adapted to the correct environment. At Grupo Edmar , we have experience in the design, manufacturing, and integration of customized electrical solutions for every type of project, from transformers to complete distribution systems. Our team can help you define the optimal technical configuration to maximize the performance and safety of your installation.