SolarEdge Home Backup Interface BI-NUSGN-03
SolarEdge Home Backup Interface BI-NUSGN-03
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SolarEdge Home Backup Interface BI-NUSGN-03
BI-NUSGN-03
SolarEdge Home Backup Interface BI-NUSGN-03
The SolarEdge Home Backup Interface (BI-NUSGN-03) delivers flexible whole-home or selected-load backup with fast switchover, integrated phase-imbalance support, and built-in metering. It supports up to three SolarEdge inverters, integrates a generator input with 2-wire start, and provides a streamlined, code-ready path to resilient residential microgrids.
Key Benefits
Flexible Backup: Protect the entire home or only critical loads with <100 ms transfer.
Scalable Power: Accepts up to three inverters (11.4 kW max on-grid/backup per unit).
Smarter Balance: Built-in auto-transformer enables 5 kW split-phase imbalance compensation.
Ready for Generators: 22.5 kW generator input with 2-wire start and dry-contact control.
Integrated Metering: PCS-certified energy meter (-03 models) for Busbar Current Management.
Special Technology
Microgrid Interconnection Device: 200 A rated MID with rapid grid disconnect/transfer.
SolarEdge Ecosystem: Seamless operation with SolarEdge Home Hub and StorEdge inverters, plus RS485 communications.
Warranty
12-Year Manufacturer Warranty.
Best Uses
Whole-Home or Critical-Load Backup: Fast, automated switchover for resilient homes.
PV + Storage + Generator Hybrids: Coordinated operation across PV, batteries, and generator.
Scalable Retrofits & New Installs: Add inverter capacity or integrate existing SolarEdge systems.
Specifications Table
| Specification | Data |
|---|---|
| Model | BI-NUSGN-03 (Backup Interface, North America) |
| Type | Main-lug backup interface (non-service entrance) |
| Nominal AC Voltage | 240 Vac split-phase (L1/L2/N) |
| AC Voltage Range | 211 – 264 Vac |
| Frequency | 60 Hz (59.3 – 60.5 Hz operational) |
| Microgrid Interconnection Device Rating | 200 A |
| Grid Disconnection Switchover | < 100 ms |
| Outputs to Loads | Max 200 A; L-L 240 Vac; L-N 120 Vac (105 – 132 Vac in backup) |
| Inverter Inputs | Up to 3; max 11,400 W / 48 A (on-grid & backup) |
| Factory CB (Inverter Input) | One 63 A breaker installed (-03 models); up to 3 × 40 A/63 A upgradable |
| Imbalance Compensation | 5,000 W |
| Generator Support | 22,500 W max; 94 Aac continuous; 2-wire start; dry contact 250/30 Vac/Vdc, 5 A |
| Communications | RS485; 2 communication inputs |
| Integrated Meter | PCS-certified energy meter (1% accuracy) on -03 models |
| Protection Rating | NEMA 3R / IP44 |
| Operating Temperature | -40 to +122 °F (-40 to +50 °C) |
| Noise | < 50 dBA |
| Dimensions (H × W × D) | 20.59 × 13.88 × 8.62 in |
| Weight | 73 lb |
| Supported Inverters | SolarEdge Home Hub Inverter; StorEdge Single-Phase Inverter |
| Conduit / AWG (Grid) | 2" / 4 – 4/0 AWG |
| Conduit / AWG (Loads) | 2" / 4 – 4/0 AWG |
| Conduit / AWG (Inverter) | 1" / 14 – 4 AWG |
| Conduit / AWG (Generator) | 1" / 8 – 3 AWG |
| Conduit / AWG (Comms) | 3/4" / 24 – 10 AWG |
| Warranty | 12 Years |
About SolarEdge:
SolarEdge Technologies, founded in 2006 in Israel, is a global leader in smart energy. They pioneered DC‑optimized solar inverters paired with module‑level power optimizers that boost system performance, increase safety, and simplify monitoring. Serving residential, commercial, and utility-scale markets, SolarEdge also offers storage, EV charging, UPS, grid services, and energy management platforms. They support over 47,000 installers in 34 countries with solutions deployed in 140+ nations.
Why Buy From US Solar Supplier?
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