Fox ESS K8 hybrid inverter · 8 kW single-phase, 4 MPPT, high voltage

The Fox ESS K8 is a single-phase hybrid inverter from 8 kW from the K series, the most powerful range of Fox ESS single-phase models. It is designed for large homes and small businesses with a single-phase electricity supply who require more power than the H1 series provides.

Key points

• Four independent MPPT trackers. This is the key difference compared to the H1 series: it allows for four different panel orientations, or the distribution of shade, without the need for optimisers or micro-inverters.
• Up to 12 kWp photovoltaic array an inverter rated at around 8 kW.
• Switchover to backup in less than 3 ms, virtually undetectable by any household appliance.
• 97.8 % at maximum efficiency and 97.4 % of European efficiency.
• High-voltage battery (300–480 V), expandable up to 33.24 kWh with seven modules.
• IP65, wall-mounted, for indoor or outdoor use.
• Wi-Fi and mains adaptor included as standard.

Technical specifications

• Rated output power: 8 kVA · single-phase 230 V, 50/60 Hz
• PV input: 4 independent MPPT channels · 80–500 V · 20 A max. per input
• Recommended maximum PV power: 12 kWp
• Battery: high-voltage lithium, 300–480 V · 50 A charge and discharge · up to 33.24 kWh (7 modules)
• EPS backup output: 8 kVA · switchover < 3 ms
• Maximum efficiency 97.8 % · European efficiency 97.4 %
• Dimensions: 450 × 527 × 208 mm · weight 29 kg
• Protection rating: IP65 · Class I
• Communications: Wi-Fi, 4G (optional), DRM, USB, CT, RS485
• Protections: DC reverse polarity, inverted battery, open circuit, short circuit and overvoltage

Compatible batteries

It works with the Fox ESS high-voltage batteries: EP6, 5.76 kWh y EP12, 11.52 kWh. From the second battery in parallel onwards, the HV Junction Box 50.

Guarantee

Standard 5-year warranty, extendable to 10 or 15 years by registering with FoxPro within 36 months of commissioning. Further information is available at the Fox ESS brand page.