Basic Project Information
Location
EU, Belgium
Application
Residential Hybrid PV & UPS
Key Products
W2R-100 II, G2R-63II
In the evolving energy landscape of Belgium, homeowners are increasingly turning to self-consumption solutions to mitigate rising energy costs and ensure power stability. This project features a robust installation of a Hybrid Photovoltaic System designed to provide seamless switching between the main grid (City Power) and a backup power source (Solar Battery Storage/Generator).
The installation utilizes GEYA’s advanced Automatic Transfer Switch (ATS) technology to manage the critical transition between power sources. As seen in the customer photos, the system is integrated into standard DIN rail distribution boards, adhering to strict European wiring standards (IEC) with clean cable management and proper circuit protection.
Related GEYA Products
This installation utilizes two distinct series of GEYA transfer switches to handle different load requirements within the property.
W2R-100 II Series ATS
Role in Project: Main Power Transfer
Visible in the main distribution panel, the W2R-100 II handles the heavy lifting. It is designed to switch high-current loads between the utility grid and the backup inverter output.
- High Breaking Capacity
- Instant Millisecond Switching (< 50ms)
- Mechanical & Electrical Interlock for Safety
G2R-63II Series ATS
Role in Project: Sub-Circuit / Critical Load Management
Shown in the secondary enclosure, the G2R-63II offers a compact solution for specific critical circuits. Its LED indicators provide immediate visual status of “Source I” (Grid) vs “Source II” (Backup).
- Compact DIN-Rail Design
- Auto/Manual Mode Switch
- Clear LED Status Indicators
The Challenge & Final Result
The Challenge
Integrating a backup power source into a residential grid-tied system presents a safety challenge: Islanding. When the grid goes down, the home must be physically disconnected from the utility lines before the backup battery or generator engages. Failure to do so can be dangerous for utility workers and can damage the inverter. Furthermore, the switchover must be fast enough that sensitive electronics (computers, Wi-Fi routers) do not reset.
The Solution
The GEYA ATS units act as the “brain” of the power distribution.
In the W2R-100 II setup (shown in the project photos), the “City Power” is connected to the Primary Source (A), and the Hybrid Inverter/Generator is connected to the Secondary Source (B). When the grid fails, the GEYA ATS mechanically disconnects Source A and engages Source B instantly.
The Result
The homeowner now enjoys a “set it and forget it” energy system. The installation photos demonstrate a clean integration where GEYA components sit perfectly alongside other major European breaker brands (like Eaton and Siemens), proving GEYA ATS products can be seamlessly integrated into standard Din-rail electrical distribution panel systems.
- Safety Assured: Zero risk of back-feeding the grid.
- Energy Independence: Maximized use of stored solar energy.
- Reliability: Tested durability for thousands of switching cycles.
Customer Feedback
“The transition between the grid and our battery backup is practically invisible. We wanted a system that would keep the lights on during winter storms without us having to go to the basement to flip switches. The GEYA switches have been running flawlessly, and the installation was straightforward for our electrician.”
— Private Homeowner, Belgium


