FOX ESS 11.4kW Hybrid Inverter, FXESS 30-139-1133F-00

The FOX ESS 11.4kW Hybrid Inverter w/RGM & APS (part number FXESS 30-139-1133F-00, often associated with models like H1-11.4-US or PowerQ AIO series) is a high-performance, split-phase hybrid inverter tailored for the North American residential and light commercial solar + storage market. It integrates seamlessly with FOX ESS’s PowerQ All-in-One (AIO) energy storage systems, supporting high-voltage LiFePO₄ batteries like the EQ4000 modules for efficient, scalable backup power and energy management.

This inverter excels in grid-tied, off-grid-capable, and hybrid applications, offering robust backup during outages, PV self-consumption optimization, time-of-use shifting, and generator integration (via compatible hubs like Fox Smart Hub G2).

Key Features

• Rated Output Power: 11.4 kW continuous (split-phase 120/240V AC, 60 Hz), with max apparent power up to 17.1 kVA (or 12.54 kVA in some battery-limited modes).
• PV Input: Up to 22.8 kW max solar STC power, 600V max input voltage, 3 independent MPPT trackers (typically MPPT1: 2 strings, MPPT2&3: 1 string each), MPPT range ~80–550V for flexible array design and high oversizing potential.
• Hybrid Functionality: Supports both DC-coupled (direct PV-to-battery) and AC-coupled configurations for maximum system versatility.
• Battery Compatibility: Optimized for high-voltage LFP batteries (e.g., FOX ESS EQ4000 series), voltage range ~80–550V, enabling high round-trip efficiency (>96–97% CEC/PV efficiency). Supports modular stacking (e.g., 2–5 EQ4000 modules per unit for 8–20 kWh per PowerQ, scalable to multiple units up to ~80 kWh total).
• Backup & Off-Grid Capability: Seamless whole-home backup with fast transfer, high surge handling (e.g., LRA up to 110–160A depending on battery config), and support for imbalanced loads.
• RGM & APS Integration: Includes Revenue Grade Metering (RGM) for precise energy monitoring and export compliance, plus APS (likely referring to advanced protection/switching or Automatic Power Source features, often bundled with Tigo/APS rapid shutdown transmitters for NEC compliance and safety).
• Protection & Durability: Built-in AFCI/GFDI arc-fault and ground-fault detection, Type II AC/DC SPDs (surge protection), heated battery support for cold climates, Type 4X enclosure rating for outdoor installation, wide operating temperature (–10°C to +55°C with derating above +40°C), natural convection cooling, and low noise (<35 dB).
• Efficiency & Performance: Up to 97.5% CEC efficiency, <25W nighttime consumption, <3% THDi at rated power.
• Monitoring & Communication: Remote access via FOX ESS app/web portal, Wi-Fi + 4G (optional), LAN, RS485, CAN, Meter/CT integration, SunSpec protocol support.
• Certifications: UL9540A, UL9540, UL1973, UL1741 SA/SB/CRD, IEEE1547, Rule 21, HECO SRD-V2.0, FCC Part 15 Class B, and more for grid-interactive reliability.
• Installation: Plug-and-play design with integrated inverter base, ground-mount, modular scalability (up to 4 units paralleled), and compatibility with accessories like Fox Hub G2 for generator auto-start.

Ideal For

Homeowners in areas like California seeking a powerful, code-compliant hybrid solution for large solar arrays, whole-home backup (including high-startup loads), NEM compliance with RGM, rapid shutdown (via APS/Tigo), and future-proof expansion. Its integration with the EQ4000 LFP batteries ensures long cycle life, safety, and high usable capacity in PowerQ AIO setups.

For the latest specifications, firmware updates, or detailed wiring/installation guides, consult the official FOX ESS US datasheet (e.g., US-PowerQ-AIO or US-H1-AC1 series) or contact a certified FOX ESS distributor/installer.