Fox ESS H1 3.7kW Hybrid Inverter with EPS 1PH Gen 2

FE-H1-3.7-G2 | Single-phase 3.7kW high-voltage hybrid inverter with dual MPPT, integrated EPS backup and IP65 rating for residential solar + storage.

Key Features

• 3.68kW rated AC output with dual MPPT trackers (max 5.5kW PV input).
• High-voltage battery compatibility (ECS2900/4100 series, 85-450V range).
• Integrated EPS backup port (5kW continuous, <20ms switch time).
• 97.8% max efficiency with wide MPPT range 80-550V DC.
• IP65 rated for indoor/outdoor installation with natural cooling.
• Export limitation via CT clamp or Modbus meter.
• WiFi dongle included for Fox ESS cloud monitoring.
• Parallel operation up to 10 units.

Electrical Characteristics

Rated AC Power	3,680 W
Max PV Input	5,500 W
MPPT Voltage Range	80-550 V DC
Max Efficiency	97.8%
EPS Output	5kW continuous / 6kW 60s
Battery Voltage	85-450 V DC
Grid Voltage	220-240 V AC

Mechanical Specifications

Dimensions (W×H×D)	430 × 410 × 178 mm
Weight	23 kg
Protection Rating	IP65
Cooling	Natural convection
Operating Temp	-25°C ~ +60°C
Noise Level	<29 dB

Installation & Compatibility

• Integrated DC switch and CT clamp included.
• Compatible with Fox ECS2900 (1M+1S min) and ECS4100 batteries.
• 5-year standard warranty (extendable to 10 years).
• G98/G99 compliant with remote firmware updates.

MPN: FE-H1-3.7-G2
Model: Fox H1 3.7kW Hybrid Gen 2

Powerful residential hybrid inverter combining PV optimisation, high-voltage battery support and seamless EPS backup in a compact IP65 package.