Backup Box solar – Automatic backup power panel for photovoltaic installations
The BEXIE Solar Backup Box is an advanced electrical distribution panel designed for photovoltaic systems with battery storage. It safely isolates the installation from the grid during an outage, enabling the hybrid inverter to switch to battery power in milliseconds. With IP65 protection, integrated electrical protections and a dedicated EV charger input, it provides a reliable and automated backup solution for residential and commercial installations.
Overview
Bexie Energy’s Solar Backup Box is an advanced electrical distribution panel specifically designed for photovoltaic installations. Acting as the central integration hub between the grid, PV system, storage battery, and household loads, it features advanced protection functions and facilitates an ultra-fast automatic backup system. During grid outages, the Solar Backup Box automatically safely isolates your system from the public grid, enabling the hybrid inverter to switch to battery power in milliseconds, keeping your critical equipment running with minimal interruption.
The Solar Backup Box complies with anti-islanding regulations, includes an input for an EV charger, and is compatible with multiple grid configurations and inverters. This makes it the most complete and versatile solution for residential and commercial solar systems that require a robust and reliable backup architecture.
What is the Solar Backup Box and what is it for?
The Solar Backup Box is the crucial isolation and management unit that coordinates the transition to off-grid (island) mode during a power outage. While it does not contain a battery itself, it acts as the automated gateway that physically disconnects your home from the grid.
Without a Solar Backup Box, many hybrid inverters cannot switch to island mode automatically and safely in compliance with local regulations. By instantly isolating the grid, Bexie’s Solar Backup Box enables your hybrid inverter to execute an ultra-fast switchover — in milliseconds — so that computers, medical equipment, security systems, and other sensitive electronic devices can continue operating smoothly.
Main features of the Solar Backup Box
- Type: PV electrical distribution panel with grid isolation and backup routing
- Switchover: Facilitates millisecond-level transition to battery power during grid outages
- Standards: Fully compliant with anti-islanding regulations
- Protection: IP65 — suitable for outdoor installation
- EV input: Includes a dedicated input for an EV charger
- Compatibility: Works with multiple inverters and grid configurations
- Use: Residential and commercial
Advantages of the Solar Backup Box
- Ultra-fast switchover: Enables the inverter to switch to backup mode almost instantly
- Uninterrupted supply: Safely directs battery power to connected equipment during grid outages
- Anti-islanding compliance: Meets strict legal safety requirements for grid disconnection
- IP65: Ready for outdoor installation with no additional protection needed
- Integrated EV input: Intelligently manages electric vehicle charging integration
- Compatible with multiple inverters: Does not restrict your choice of inverter
- Compact design: Easy installation in a standard electrical panel format
What are anti-islanding regulations?
Anti-islanding regulations require photovoltaic systems to automatically disconnect from the grid when a supply interruption occurs. This prevents the solar installation from continuing to inject energy into the public grid while maintenance technicians are working on it. The Solar Backup Box manages this physical disconnection safely and automatically, meeting the requirements of UK G98/G99 grid connection standards and applicable European regulations, as well as Spanish self-consumption legislation under Royal Decree 244/2019 where relevant.
IP65 protection for outdoor installation
The IP65 rating of the Solar Backup Box guarantees full protection against dust and against water jets from any direction, allowing direct outdoor installation — on the façade, next to the main electrical panel, or in the solar installation enclosure itself — with no need for additional protection.
Integrated input for EV charger
The Solar Backup Box includes a specific input for managing the EV charger, allowing the Wall-mounted to be integrated into the backup system safely. This ensures that during a grid outage, the system can correctly manage the charging priority between the home’s critical loads and the electric vehicle charger.
Applications of the Solar Backup Box
- Homes with medical equipment or sensitive electronics
- Households with an electric vehicle and integrated charger
- Offices and businesses with continuity-of-supply requirements
- Installations with security or alarm systems
- Any photovoltaic installation with a battery that requires an automated off-grid Gateway
- Areas with unstable grid supply or frequent outages
Integration with the Bexie energy system
The Solar Backup Box integrates seamlessly with our hybrid inverters, LV and HV storage batteries, and EV chargers to provide a complete, secure, and fully automated self-consumption installation with backup capabilities.
Frequently asked questions about the Solar Backup Box
What’s the difference between a Solar Backup Box and a hybrid inverter with island mode?
They don’t compete; they work together. A hybrid inverter is responsible for generating power and pulling energy from the battery, but by law, it cannot power your home during an outage while still connected to the public grid (to protect grid workers). The Solar Backup Box acts as the vital automated gateway that instantly physically disconnects your system from the grid. This rapid, safe isolation is exactly what enables your hybrid inverter to activate its ultra-fast backup mode in milliseconds.
Is it compatible with my current inverter?
The Solar Backup Box is compatible with multiple inverters and grid configurations. Contact our technical team to confirm compatibility with your specific inverter model.
Can it be installed outdoors?
Yes, the IP65 rating allows outdoor installation with no additional protection, resisting dust and water under any standard weather conditions.
What happens when the grid supply returns?
The Solar Backup Box automatically detects the stable return of the grid supply and safely reconnects the installation, returning the system to its normal operating mode with no need for manual intervention.
Does it include integrated electrical protections?
Yes, the Solar Backup Box integrates advanced electrical protection functions — overvoltage, overcurrent and short-circuit — protecting both the photovoltaic installation and the connected equipment.
