Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter

£1200.43

The Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter combines exceptional conversion efficiency with robust three-phase output, purpose-built for larger residential and light-commercial PV systems in the UK. Featuring dual MPPT trackers operating across a 160 – 950 V window and a peak efficiency of 98.5 %, it captures optimum generation even under mixed-roof conditions or variable British light levels.

Its durable IP65-rated aluminium housing and quiet fan-assisted cooling (< 45 dB) make it ideal for both indoor plant rooms and outdoor walls. Connectivity options include integrated Wi-Fi and LAN with optional 4 G, all managed via FoxCloud for seamless real-time monitoring and performance logging. Compliant with G99 and EN 62109 safety standards, it delivers proven reliability and straightforward installation for UK professionals.

Contact Evergy for product guidance or system compatibility support.

SKU: H3-10.0-E

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Free and easy returns | Easy to Install | Professional Installers Available

The Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter represents the highest-output model in Fox’s trusted H3 Series, engineered for advanced British photovoltaic systems that demand both performance and resilience. Offering 10 000 W of rated AC power and up to 13 000 W PV input, it’s ideally suited for larger homes, farm arrays or small commercial installations where consistent generation and battery-ready flexibility are priorities.

High-Efficiency Performance for British PV Systems

Using dual MPPT trackers with a broad 160 – 950 V operating window, the H3 10 kW intelligently optimises each string’s output across changing irradiance and orientation. With 98.5 % peak efficiency and 97.8 % Euro efficiency, it ensures minimal loss from DC to AC conversion, maximising yield even during low-light UK mornings or overcast afternoons. The wide MPPT range also enables flexible string design for east-west or mixed-pitch roof layouts.

Built for Reliability & Protection

Constructed with an IP65-rated aluminium enclosure and active cooling system, the H3 maintains stable operation below 45 dB, making it suitable for outdoor walls or plant-room environments. Embedded surge arrestors (Type II DC / Type II AC), residual-current and insulation monitoring, and anti-islanding logic provide comprehensive safety coverage. Certified to EN 62109-1 & -2 and compliant with G99 connection standards, it meets the strict requirements for UK grid-connected solar arrays.

Key Features

10 kW three-phase output – ideal for large domestic or commercial arrays
Dual MPPT inputs for independent string optimisation (160 – 950 V range)
98.5 % peak / 97.8 % Euro efficiency for high energy yield
IP65 fan-assisted housing for quiet operation and outdoor mounting
Integrated surge protection & residual-current monitoring for installer confidence
FoxCloud Wi-Fi/LAN monitoring with optional 4 G connectivity
Seamless compatibility with Fox LFP high-voltage batteries

If you’re wondering how efficient the H3 10 kW remains during typical UK conditions, its wide MPPT tracking range and responsive control logic enable each string to operate close to its optimum point even under diffuse light or partial shading – a common challenge for British rooftops.

Specification data verified from Fox ESS H3 Series Datasheet BE-V1.3 (2023/06/07).

Explore other models in the range such as the H3 8 kW or the H3 6 kW variant, or pair this unit with high-quality solar panels and battery storage from Evergy’s portfolio of trusted UK brands.

Seamless Integration with Solar Panels & Battery Storage

The Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter integrates perfectly with high-efficiency solar panels and battery storage systems, enabling smooth energy flow between generation, storage, and grid export. Supporting Fox’s high-voltage LFP battery platform (180 – 600 V), it can scale up to 33.24 kWh of capacity — ideal for larger households or light-commercial sites looking to enhance self-consumption. Direct DC coupling reduces conversion loss, improving overall system yield and extending battery life.

Smart Monitoring & Connectivity

Real-time performance oversight comes as standard via FoxCloud. Built-in Wi-Fi and LAN connectivity give installers and end-users access to live production data, while optional 4 G modules ensure coverage on remote or rural sites. The inverter’s communications suite includes RS485, CAN, DRM, ripple control and USB, allowing effortless integration with battery BMS units, metering systems, and smart-home energy platforms.

Compact Design & Rugged Construction

Delivering high power density in a manageable form, the H3 10 kW measures 449 × 519 × 198 mm and weighs 35 kg. The IP65-rated aluminium housing and fan-assisted cooling system (under 45 dB) allow reliable outdoor installation even in exposed British conditions. All connectors and cable glands are installer-accessible for safe, quick mounting on solid walls or plant-room backboards.

Installer Guidance & System Notes

String design & MPPT layout

Use the 160 – 950 V operating window and balance current limits (16 A per tracker). For multi-aspect or shaded roofs, assign each MPPT to a separate orientation to maintain optimal yield.

Battery configuration & sizing

Begin with ~10 – 13 kWh for typical UK homes and scale up to 33.24 kWh as demand grows. The Fox high-voltage LFP architecture supports modular expansion without upgrading the inverter.

Grid compliance & safety

Fully compliant with G99 and EN 62109 standards. Built-in residual-current, insulation, and surge protection ensure safe commissioning and ongoing operation on UK grids.

Why We Recommend the Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter

At Evergy, we endorse the H3 10 kW for its outstanding efficiency, resilient IP65 construction and comprehensive communication suite. It’s a trusted choice for installers who demand consistent performance from a premium hybrid platform. Field-tested across UK sites, it delivers superior conversion efficiency and stable operation under varying load conditions.

Evergy is the renewable division of LAMPS Electrical — an independent UK wholesaler with over 15 years of trade experience supporting solar and EV installers nationwide.

Choose Fox ESS for verified reliability, Evergy for genuine supply and UK technical support.

Compare Models in the Fox H3 Range

Model	Max PV (W)	Rated AC (W)	MPPTs	MPPT Window (V)	Max Eff.	Dimensions (mm)	Weight (kg)
H3-8.0-E	10400	8000	2	160 – 950	98.5 %	449×519×198	28
H3-10.0-E	13000	10000	2	160 – 950	98.5 %	449×519×198	35

FAQs – Fox ESS H3 10 kW Three-Phase Hybrid Solar Inverter

How does the H3 10 kW differ from the H3 8 kW model?

The H3 10 kW delivers higher AC output (10 000 W vs 8 000 W) and supports a larger PV input of 13 000 W, making it better suited for extensive arrays or small-commercial sites.

Is it compatible with Fox ESS batteries?

Yes — the H3 Series supports Fox high-voltage LFP batteries, scalable up to 33.24 kWh of usable storage.

Can the H3 10 kW be mounted outdoors?

Yes, the IP65-rated housing and fan-assisted cooling system (<45 dB) are purpose-built for British weather conditions and external wall mounting.

How is the system monitored?

Monitoring is handled via FoxCloud — with Wi-Fi and LAN standard and 4 G available for remote locations where wired connectivity is limited.

What are the product dimensions and weight?

The inverter measures 449 × 519 × 198 mm and weighs around 35 kg, allowing easy installation by two trained installers.

For expert guidance on system compatibility or large-scale array design, contact Evergy — trusted UK distributor of Fox ESS solar technology and battery storage solutions.

Attribute name	Attribute value
Features	Easy installation, built-in fuse protection, True 3-phase backup, remote monitoring via app or web
Warranty	Typically 5 to 10 years
Rated Power	10,000 W
Efficiency	97.3%

H3-10.0-E

FOX ESS

Fox ESS is a global leader in the development of inverter and energy storage solutions. Engineered by some of the world’s leading inverter and battery experts, their products offer advanced features, coupled with exceptional performance and reliability.

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