Fox ESS S3000-G2 3.0kW Single-Phase String Inverter

Name: Fox ESS S3000-G2 3.0kW Single-Phase String Inverter
SKU: S3000-G2
Price: 240.00 GBP
Availability: InStock

£240.00

Fox ESS S3000-G2 3.0kW Single-Phase String Inverter delivers the top-end output in Fox’s S(G2) single-MPPT line for compact UK arrays. With a high-accuracy MPPT, wide 80–500V operating window and low 60V start-up, it sustains production through early mornings and cloudy British weather. The fan-free, IP65 enclosure enables quiet, outdoor-ready mounting and minimal maintenance.

Commissioning is fast: onboard data logging plus FoxCloud remote monitoring (Wi-Fi/LAN, optional 4G) provide real-time visibility for installers and owners. Certified to G99 and EN62109, S3000-G2 integrates cleanly with UK single-phase supplies. Headline figures include 3000W AC output, up to 4500W max PV input, single MPPT, and peak efficiency up to 97.6% (confirm limits in the datasheet). Considering adjacent sizes? Step down to the S2500-G2. For components, explore our solar panels and battery storage.

Contact Evergy for product guidance or system compatibility support.

SKU: S3000-G2

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

The Fox ESS S3000-G2 3.0kW Single-Phase String Inverter is the most powerful single-MPPT model in Fox’s S(G2) range, designed for installers who need maximum output from compact residential arrays. It provides high efficiency, reliable grid compliance and quiet operation, all in a lightweight and installer-friendly design.

Smart Hybrid Power for UK Homes and Installers

The S3000-G2 combines a single precision MPPT with a generous 4500W PV input capacity across a wide 80–500V range, ensuring steady yield through the low-light mornings and overcast conditions typical of British weather. With its fan-free IP65 housing, the inverter runs quietly (<25dB) and supports outdoor installation without added maintenance. Integrated data logging and FoxCloud monitoring (Wi-Fi/LAN, optional 4G) make system verification and customer handovers quick and efficient.

Installer-Ready Safety & Compliance

Safety and grid compliance are built into every S3000-G2. Anti-islanding, residual-current and insulation monitoring speed up G99 approval, while EN62109 certification ensures long-term operational safety. Real-time diagnostics through FoxCloud let installers confirm configuration remotely, cutting service time and return visits.

Key Installer Features

Single MPPT with rapid tracking accuracy and 80–500V window
3000W rated AC output; 4500W max PV input
Fan-free IP65 enclosure for quiet, outdoor mounting (<25dB)
Built-in FoxCloud connectivity via Wi-Fi/LAN; optional 4G for remote sites
Integrated RCM, insulation monitoring and anti-islanding protection
Lightweight, installer-friendly chassis for single-person mounting

If you’re wondering how the S3000-G2 performs in partial shade or mixed string lengths, its precise MPPT tracking maintains strong energy harvest under variable irradiance, making it ideal for typical British rooftops with split or east-west aspects.

Specification data verified from Fox ESS S(G2) documentation (V3.4, April 2025).

Smart Monitoring & Installer-Grade Connectivity

The Fox ESS S3000-G2 gives both installers and homeowners complete system transparency through FoxCloud. Built-in Wi-Fi and LAN connections allow easy setup, while optional 4 G enables remote sites to stay connected. Local data logging simplifies commissioning checks, and RS485 and CAN interfaces allow straightforward BMS, export-limiting and metering integration. This ensures long-term service visibility and smooth performance verification.

Seamless Integration with Solar Panels & Battery Systems

Compatible with all major solar panels, the S3000-G2 is a flexible single-phase inverter for domestic and small commercial PV arrays. Through Fox’s high-voltage LFP platform, it can connect to Fox ESS batteries via the appropriate controller, allowing installers to future-proof systems for hybrid upgrades. This makes it an ideal option for customers planning solar-plus-storage systems later on.

Compact Design & Rugged Construction

With a footprint of 290×220×116mm and a weight of only 5.4kg, the S3000-G2 offers exceptional ease of handling and wall-mounting. The fan-less IP65 enclosure ensures quiet (<25dB) and dustproof operation, ideal for British outdoor conditions. Installers can expect long-term reliability, low maintenance and efficient heat dissipation even under continuous high-load operation.

Installer Guidance & System Notes

String design & MPPT layout

Maintain a DC input range of 80–500V and an input current of up to 12.5A. One balanced string per MPPT is ideal for optimal voltage utilisation and high conversion efficiency.

Battery configuration & sizing

When integrated with a compatible Fox controller, start with 5–10kWh of LFP battery capacity and expand using modular stacking options as required. The inverter’s communication interface supports precise charge management and fault reporting.

Grid compliance & safety

Compliant with G99 and EN62109 for UK installations. Integrated anti-islanding, residual-current and insulation monitoring ensure safe and compliant operation across the product’s life cycle.

Why We Recommend the Fox ESS S3000-G2

At Evergy, we recommend the S3000-G2 for installers who need dependable 3.0kW performance in compact UK systems. It offers superb efficiency, robust construction and plug-and-play connectivity through FoxCloud. Backed by Fox ESS engineering and supported by Evergy, the renewable division of LAMPS Electrical, an independent UK wholesaler with over 15 years of trade experience, this inverter delivers proven reliability and support for professionals nationwide.

Compare in the Fox S(G2) Range

Model	Max PV (W)	Rated AC (W)	MPPTs	Voltage Window (V)	Max Eff.	Dimensions (mm)	Weight (kg)
S2500-G2	3750	2500	1	80–500	97.6%	290×220×116	5.4
S3000-G2	4500	3000	1	80–500	97.6%	290×220×116	5.4

FAQs – Fox ESS S3000-G2 3.0kW Single-Phase String Inverter

How does the S3000-G2 differ from the S2500-G2?

The S3000-G2 provides 3.0kW AC output and up to 4500W PV input, offering higher generation potential for medium-sized domestic arrays.

Is it compatible with Fox ESS batteries?

Yes , it connects with Fox high-voltage LFP battery systems using a compatible controller, allowing hybrid expansion later.

Can it be mounted outdoors?

Yes. The IP65 aluminium enclosure and passive cooling system make it fully weatherproof and quiet in operation.

How can I monitor performance?

Through FoxCloud , the built-in Wi-Fi/LAN or optional 4G module lets users track generation in real time.

What are the size and weight?

Approximately 290×220×116mm and 5.4kg, making it lightweight and quick to install.

For professional trade advice and system design assistance, contact Evergy , your trusted UK distributor for Fox ESS solar inverters and renewable energy equipment.

Attribute name	Attribute value
Dimensions	29 x 22 x 11.6 cm
Weight	5.4 kg
Warranty	10 Years
Rated Power	3,000 W
Max Efficiency	97.4%
MPPT Quantity	1
DC Start-up Voltage	60 V
Protection Class	IP65 (Outdoor Use)

S3000-G2

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).