Fox ESS R110 110 kW Three-Phase Commercial Solar Inverter

The Fox ESS R110 110 kW Three-Phase Commercial Solar Inverter represents the upper tier of Fox’s R-Series range — a high-capacity solution designed to meet the rigorous demands of large commercial and industrial photovoltaic systems. Developed for dependable long-term use in British conditions, it converts solar power with exceptional precision and minimal energy loss, helping businesses lower operational costs while achieving greater energy independence.

High-Efficiency Performance for Commercial PV Systems

Delivering up to 110 kW AC output and supporting extensive PV arrays, the R110 maximises generation through quad MPPT tracking. Each tracker independently optimises voltage and current to ensure stable output, even when panels are installed across multiple orientations or shading conditions. With a maximum efficiency of 98.8 % and a broad MPPT window of 200 – 1 000 V, the inverter maintains reliable performance throughout variable UK daylight conditions.

Thanks to its advanced control algorithms and high-speed DSP architecture, power conversion remains smooth and consistent. The R110’s reactive-power control and export limitation capabilities also make it adaptable for grid-tied commercial operations and DNO compliance.

Built for Reliability & Protection

Fox ESS has engineered the R110 for resilience, combining a robust IP65-rated housing with advanced electrical safeguards. Type II surge protection (both DC and AC sides), built-in residual-current monitoring, and insulation fault detection ensure system safety in every operating condition. Passive cooling and optimised heat-sink design reduce maintenance requirements and extend component life, even under high ambient temperatures common on UK rooftops or plant rooms.

Noise levels remain exceptionally low thanks to its fan-less design, allowing flexible installation across sensitive environments such as educational facilities or healthcare sites. Designed in accordance with EN 62109 and G99 standards, the R110 guarantees full grid compliance and safe, stable power delivery.

Key Features

• Up to 110 kW AC rated power for large-scale solar systems
• Quad MPPT inputs for superior string flexibility
• 98.8 % peak efficiency / 98.5 % Euro efficiency
• IP65 enclosure suitable for outdoor mounting
• Integrated surge protection and insulation monitoring
• Smart FoxCloud monitoring with Wi-Fi, LAN, and RS485 connectivity

If you’re wondering how efficiently the R110 performs during cloudy or low-light British weather, its broad MPPT voltage range and rapid response algorithms ensure energy harvest remains strong throughout fluctuating conditions — keeping businesses generating when sunlight is at its weakest.

Specification data verified from Fox ESS R-Series documentation (v1.2, 2024).

Seamless Integration with Solar Panels & Battery Storage

The Fox ESS R110 110 kW Three-Phase Commercial Solar Inverter integrates effortlessly with solar panels and high-voltage LFP battery systems, supporting flexible system architecture for businesses aiming to maximise on-site generation. Its high DC input current (up to 32 A per MPPT) allows compatibility with the latest large-format modules, while the advanced control logic enables parallel operation of multiple inverters for megawatt-scale installations.

Using Fox’s proprietary communication protocol, the R110 can be coupled directly with the Fox ESS energy management platform for coordinated grid export control, peak-shaving strategies, and enhanced operational visibility — ideal for facilities seeking greater energy autonomy.

Smart Monitoring & Advanced Connectivity

Full transparency is provided through FoxCloud, giving engineers and system owners instant access to real-time and historical performance data. Built-in Wi-Fi and LAN come as standard, while RS485, CAN, and USB interfaces support integration with BMS units and third-party monitoring systems. The optional 4G module ensures connectivity even in remote commercial locations.

Comprehensive data logging enables predictive maintenance, while firmware updates and configuration adjustments can be completed remotely — saving site visits and reducing downtime. The inverter’s internal diagnostics automatically detect string anomalies, insulation issues, and surge events, protecting system output over its lifetime.

Compact Design & Rugged Construction

Despite its industrial capacity, the Fox ESS R110 maintains a compact footprint. Measuring approximately 955 × 700 × 350 mm and weighing 82 kg, it can be wall-mounted or installed within a sheltered plant room. The IP65 aluminium chassis and passive cooling system ensure quiet operation (below 30 dB), making it suitable for diverse UK environments including schools, factories, and logistics centres.

Installer Guidance & System Notes

Why We Recommend the Fox ESS R110 110 kW Inverter

At Evergy, we recommend the R110 for large-scale commercial solar projects requiring proven reliability, advanced protection, and seamless integration with battery storage. Its exceptional conversion efficiency, robust IP65 design, and intuitive FoxCloud management platform make it a trusted choice for engineers seeking stable long-term performance.

Evergy is the renewable division of LAMPS Electrical — an independent UK wholesaler with over 15 years of experience supporting professional solar installers nationwide. We supply genuine Fox ESS equipment with full UK warranty support and technical assistance from our Oxfordshire-based renewables team.

Choose the R110 for dependable power delivery, scalable architecture, and verified British compliance.

Compare in the Fox ESS R-Series Range

FAQs – Fox ESS R110 110 kW Three-Phase Commercial Solar Inverter

For expert guidance on compatibility, sizing, or system design, contact Evergy — trusted UK supplier of Fox ESS solar inverters and renewable components.