Fox ESS AC Coupled AC1 3.7kW Single Phase Charger Inverter

By Fox ESS

Delivery available

Elevate Your Energy Efficiency with Fox ESS AC Coupled AC1 3.7kW Charger Inverter

The Fox ESS AC Coupled 3.7kW AC1 Charger Inverter is designed for effortless installation, saving you valuable time during setup. Enjoy the added convenience of remote monitoring via your smartphone or web portal.

  • Utilizes High Voltage Batteries: Benefit from the advanced technology of high voltage batteries Fox ESS HV2600-V2, Fox ESS ECS2900, Fox ESS ECS4100, and Fox ESS ECS4800.
  • IP65 rated for outdoor installations
  • Remote monitoring via web portal or smartphone
  • Easily expandable battery capacity
  • Dual MPPT ensures optimal solar production
  • High round-trip efficiency of 97%; BMS unit required for a minimum of 2 x HV2600 batteries

CT Clamps and meter are included in the box.

Key Features

This high-quality inverter converts solar energy to AC energy, storing it in a battery. It optimizes energy consumption, stores energy for future use, or feeds excess energy into the grid. The system boasts several advantages:

  • Advanced DSP control technology
  • Utilizes the latest high-efficiency power components
  • Advanced anti-islanding protection
  • Max efficiency up to 97.8%, THD <3%
  • Export limitation (CT/Meter/DRM0/ENSTOP)
  • WiFi remote control (with WiFi dongle installed)

Operating Modes

The Fox ESS AC Coupled 3.7kW AC1 Charger Inverter features four operational modes to suit varying needs:

  1. Self-use: Prioritizes battery discharge for local loads, with the grid supplying power when the battery capacity is insufficient.
  2. Feed in priority: In the presence of an external generator, generated power is used for local loads first, then exported to the grid. Redundant power charges the battery.
  3. Force time use: Ideal for areas with peak and off-peak pricing. Allows flexible setting of charging and discharging times, with the option to charge from the grid.
  4. Back-up (EPS) mode: Supplies emergency power from PV or a battery during grid outages.

The Fox ESS AC Coupled 3.7kW AC1 Charger Inverter seamlessly integrates with smart Agile tariffs, offering compatibility with Octopus Energy and other Economy 7 providers. It also works with an external backup generator in case of extended grid outages.

Fast Delivery Across the UK

Experience the benefits of the Fox ESS AC Coupled 3.7kW AC1 Charger Inverter with prompt 2-3 working days delivery within the UK (longer to the Highlands, islands, and Northern Ireland).

      Detailed specifications:

      Battery Type: Lithium Iron Phosphate (LiFePO4)
      Battery Voltage: 85-450V
      Max. Charge/Discharge Current: 40A
      Communication Interface: CAN(Communicate With Inverter), RS485 (Upgrade BMS)
      Max. AC Input Power: 7680VA
      Max. Input Current (per phase): 34.9A
      Rated Output Power: 3680W
      Max. Output Apparent Power: 4048VA
      Rated Output Current (per phase): 16.0A
      Max. Output Current: 17.6A
      Rated Grid Voltage: 220-240VAC
      Rated Grid Frequency: 50/60Hz
      Power Factor: 1 ( Adjustable from 0.8 leading to 0.8 lagging )
      THDi: <3% @rated power
      Max. Output Apparent Power: 5000VA
      Peak Output Apparent Power (60sec): 6000VA
      Max. Current (per phase): 21.7A
      Rated Output Voltage: 220-240VAC
      Rated Output Frequency: 50/60Hz
      Power Factor: 1 ( Adjustable from 0.8 leading to 0.8 lagging )
      THDi (linear load): <2% @rated power
      Switch Time: 20ms
      Max. Efficiency: 97.80%
      Max. Battery Discharge Efficiency (BAT to AC)(@full load): 97.00%
      Operating Temperature: -25 ~ +60°C
      Protection Degree: IP65
      Size:  430 x 410 x 178mm
      Net Weight: 23kg

      In the Box:
      • 1 X Fox ESS AC Coupled 3.7kW AC1 Charger Inverter,
      • 1 X Fox ESS AC Coupled 3.7kW AC1 Charger Inverter User's Manual.
      Frequently Asked Questions:

      Don't know an answer to your question? Call us on 020 8064 0335 or email