Fox ESS H3-8.0-E 8 kW Three-Phase Hybrid Solar Inverter

£1147.83

The Fox ESS H3-8.0-E 8 kW Three-Phase Hybrid Solar Inverter delivers efficient three-phase output for larger UK homes and light-commercial sites. Dual MPPT trackers operate across a broad 160 – 950 V window, helping maintain strong yield on split strings and complex roofs common in British settings.

With up to 10,400 W PV input and 8,000 W rated AC output (8,800 VA peak, 60 s), the H3-8.0-E balances headroom and efficiency. Its IP65 weather-sealed enclosure and quiet (<45 dB) cooling support outdoor or plant-room use, while FoxCloud provides real-time monitoring via integrated Wi-Fi/LAN (optional 4G). Certified to EN 62109 and compliant with G99, it integrates cleanly with Fox high-voltage LFP batteries for scalable storage.

Contact Evergy for product guidance or system compatibility support.

SKU: H3-8.0-E

Qty:

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

The Fox ESS H3-8.0-E 8 kW Three-Phase Hybrid Solar Inverter is the sweet spot of the H3 range for British photovoltaic systems needing robust three-phase power without oversizing. With 10,400 W maximum PV input and a 8,000 W rated AC output (8,800 VA peak for 60 s), it fits larger homes, farms and light-commercial arrays seeking dependable yield and hybrid readiness.

High-Efficiency Performance for British PV Systems

Two independent MPPT trackers and a wide 160 – 950 V operating window keep strings close to their optimum across changing light and multi-aspect layouts. Peak conversion efficiency reaches 98.5 % (Euro 97.8 %), reducing DC-to-AC losses and supporting strong generation through low-light mornings, overcast days and winter months typical across the UK.

Built for Reliability & Protection

The H3-8.0-E pairs an IP65 weather-sealed enclosure with quiet (<45 dB) fan-assisted cooling for stable operation indoors or out. Safety systems include residual-current and insulation monitoring, anti-islanding, and integrated surge arrestors (Type II DC / Type II AC). Certified to EN 62109-1 & -2 and compliant with G99, it streamlines UK grid connection for professional systems.

Key Features

8 kW three-phase AC output with 8,800 VA peak (60 s)
Dual MPPT with a 160 – 950 V window for flexible string design
98.5 % peak / 97.8 % Euro efficiency for strong real-world yield
IP65 enclosure; <45 dB operation for outdoor or plant-room mounting
Integrated Type II surge protection and comprehensive grid safety logic
FoxCloud monitoring via Wi-Fi/LAN (optional 4G)

If you’re wondering how the H3-8.0-E performs in low-light UK conditions, its wide MPPT window and responsive tracking help maintain meaningful output under diffuse light or partial shading — common on multi-aspect British roofs.

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

Considering system size? Step down to the H3 6 kW or up to the H3 10 kW, and pair with high-quality solar panels and battery storage from Evergy.

Seamless Integration with Solar Panels & Battery Storage

The H3-8.0-E integrates cleanly with premium solar panels and Fox high-voltage LFP batteries (180 – 600 V). A typical UK home might begin around 10 – 13 kWh and scale storage upwards as demand grows. Direct DC coupling reduces conversion losses and improves charge response for higher self-consumption.

Smart Monitoring & Connectivity

FoxCloud provides real-time visibility via built-in Wi-Fi and LAN, with optional 4 G for remote or rural sites. Communications include RS485, CAN, DRM, ripple control and USB for straightforward integration with meters, battery BMS and smart-home controls.

Compact Design & Dimensions

High power density in a practical footprint: 449 × 519 × 198 mm, approx. 28 kg. The IP65 aluminium housing and <45 dB cooling enable reliable outdoor or plant-room installation. Access-friendly terminals support neat, safe routing on sound wall structures.

Installer Guidance & System Notes

String design & MPPT layout

Use the 160 – 950 V MPPT window and observe current limits (up to 16 A per tracker). On mixed orientations, dedicate one MPPT per roof aspect to maximise yield.

Battery configuration & sizing

Start around 10 – 13 kWh for most UK homes; expand modularly as usage grows. The high-voltage LFP platform enables scalable capacity without changing the inverter.

Grid compliance & safety

Fully compliant with G99 and certified to EN 62109-1 & -2. Residual-current and insulation monitoring plus Type II SPDs support safe commissioning and operation.

Why We Recommend the Fox ESS H3-8.0-E

Evergy recommends the H3-8.0-E when projects need reliable three-phase output, strong low-light behaviour and robust IP65 construction. Installers value its straightforward commissioning, comprehensive communications and dependable MPPT performance across British conditions.

Evergy is the renewable division of LAMPS Electrical — an independent UK wholesaler with 15+ years supporting professional installers nationwide.

Compare Models in the Fox H3 Range

Model	Max PV (W)	Rated AC (W)	MPPTs	MPPT Window (V)	Max Eff.	Dimensions (mm)	Weight (kg)
H3-6.0-E	9,000	6,000	2	160 – 950	98.5 %	449×519×198	28
H3-10.0-E	13,000	10,000	2	160 – 950	98.5 %	449×519×198	35

FAQs – Fox ESS H3-8.0-E 8 kW Three-Phase Hybrid Solar Inverter

How does the H3-8.0-E compare to the H3-6.0-E?

The H3-8.0-E increases rated AC output to 8,000 W (vs 6,000 W) and supports a larger 10,400 W PV input, suiting bigger arrays.

Is it compatible with Fox ESS batteries?

Yes — it supports Fox high-voltage LFP batteries, enabling scalable storage to match your usage profile.

Can it be mounted outdoors?

Yes. The IP65 enclosure and <45 dB cooling make it suitable for outdoor walls or plant-rooms in British weather.

How is the system monitored?

Via FoxCloud, using built-in Wi-Fi/LAN or optional 4 G for remote sites.

What are the size and weight?

The unit measures 449 × 519 × 198 mm and weighs around 28 kg.

For expert guidance on compatibility or three-phase system design, contact Evergy — trusted UK distributor of Fox ESS and leading solar brands.

Attribute name	Attribute value
Features	True 3-phase backup power, supports multiple battery configurations, remote monitoring via app or web portal
Warranty	Typically 5 to 10 years
Rated Power	8,000 W
Battery Compatibility	Supports various high-voltage batteries
Efficiency	97.3%

H3-8.0-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.

Free delivery -

NEXT DAY Delivery to Oxfordshire, Buckinghamshire and London via an EVERGY vehicle. Max of 1 ton weight.

Other delivery options via courier -

FREE NEXT DAY (*orders over £50, some batteries and inverters will require an additional fee) via FEDEX. Monday to Friday, up to 30kg, Max box size 50cm x 50cm x 50cm (volume). Orders must be received by 2pm.

Anytime NEXT DAY delivery – under £50 = £6.50 (depending on location, weight and size)

Regardless of spend, additional to any of the above charges –

Before noon (FedEx Priority Express) = Guide Price £15.00 (calulated at checkout)

Before 10am (FedEx First) = Guide Price £20.00 (calulated at checkout)

Delivery of pallets -

Palletised deliveries – Prices starting at £58

Multiple pallet orders can be quoted upon request (price dependent on number of pallets and postcode area)

Special delivery items may vary (non-stock products).

SAME DAY COLLECTION - Click & collect from Evergy Stores (Thame, Oxfordshire).