The Backup Box is an essential device for ensuring continuous power supply in homes with photovoltaic installations, especially in situations where grid service is interrupted. Depending on the Backup Box model chosen, its installation can vary significantly. In this article, we will explore the different locations where a Backup Box can be installed, with special emphasis on the model COMBI-PRO-MAXmodel, which offers direct integration into the home’s electrical panel.
What is a Backup Box?
A Backup Box is a device that enables automatic switching between mains power and an alternative power source, such as solar panels with or without batteries, in the event of a power outage. This ensures that essential devices continue to operate without interruption, providing an ideal solution for homes and businesses that require a reliable power supply.

Types of installations for a Backup Box
There are several installation options for a Backup Box, depending on the type of power system and the specific needs of the user:
External installation of a backup box
Conventional Backup Boxes are typically installed near the home’s main panel or inverter. This type of installation is common in systems where simple switching between the grid and an alternative energy source is required, such as solar power systems.
Differences between a conventional Backup Box and the COMBI-PRO-MAX model
Unlike traditional Backup Boxes, the COMBI-PRO-MAX model has advanced features that allow it to be installed directly in the electrical panel of the house. The following are some of the main advantages and differences of this model:
Direct installation in the electrical panel: COMBI-PRO-MAX
The COMBI-PRO-MAX is an innovative backup box specifically designed to be integrated directly into the home’s electrical panel, offering more precise and secure control of the power supply. This solution is ideal for:
- Reduced space: Its compact design allows it to be installed inside the electrical panel, saving space and simplifying cable and connection management.
- Advanced protection: Incorporates protection against permanent overvoltage, overconsumption and short circuits, guaranteeing the safety of the installation and the connected equipment.
- Intelligent energy management: In the event of a power outage, the COMBI-PRO-MAX, depending on the type of installation, can automatically disconnect non-critical loads and keep essential loads running through an “island mode” generation system.
- Automatic reconnection to the grid: Once grid power is restored, the device automatically reconnects the loads and connects the inverter to the grid to re-synchronize and dump the surplus.
Advantages of the COMBI-PRO-MAX
Simplified integration: By installing directly into the home’s switchboard, external space requirements are eliminated and the installation is optimized.
Island mode: Allows the solar inverter to continue operating even during a blackout, as long as there is sufficient solar power or battery charge.
Complete protection: Combines circuit breaker protection, temporary overvoltage protection, and island mode activation control functions.

The choice of Backup Box type will depend on the specific needs of each installation. If you are considering the installation of a Backup Box, we recommend that you opt for the model that best suits your needs, considering factors such as available space, the type of power system you have and the protection features you require.
For more information about the COMBI-PRO-MAX and its installation, consult a qualified professional or visit Toscano’s website.


