EG4 FlexBOSS18 Hybrid Solar Inverter | 18kW PV / 13kW AC | Split-Phase | 3-MPPT | Scalable | Remote Wi-Fi Monitoring
EG4 FlexBOSS18 Hybrid Solar Inverter | 18kW PV / 13kW AC | Split-Phase | 3-MPPT | Scalable | Remote Wi-Fi Monitoring
SKU: INV031
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- Price: $3,499.00
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PRODUCT DESCRIPTION
Description
The EG4 FlexBOSS18 is a high-capacity, split-phase hybrid inverter built for powerful residential or commercial energy systems. With 18,000W of PV input, dual MPPTs supporting 4 strings, and 90A grid feed-through at 120/240VAC, it delivers superior flexibility and grid-tied reliability. Seamlessly pairing with EG4’s GridBOSS MID gateway, the FlexBOSS18 enables smart load management, AC coupling, and generator support while reducing installation time and costs. Safety features include rapid shutdown, ground fault and arc fault protection, plus industry-leading certifications. With remote monitoring, Wi-Fi connectivity, and mobile alerts, the FlexBOSS18 offers efficient, scalable power with advanced control. Elevate your solar or off-grid system with this powerful, future-ready inverter.
Specifications
Inverter Specifications
| Category | Specification |
|---|---|
| Nominal AC Voltage | 120/240VAC | 120/208VAC (L1/L2/N required) |
| Frequency | 60 Hz (Default) | 50 Hz |
| Max AC Current | 54A @ 240V | 54A @ 208V |
| Max AC Input Power | 13,000W |
| Max AC Bypass | 90A |
| Operating Voltage Range | 180 – 270VAC |
| Output Voltage | 120/240VAC | 120/208VAC (L1/L2/N required) |
| Max Output Current | 66.7A |
| Output Frequency | 60 Hz (Default) | 50 Hz |
| Nominal Output Power (Without PV) | 12,000W @ 240V | 12,000W @ 208V |
| Nominal Output Power (With PV) | 16,000W @ 240V | 13,800W @ 208V |
| Power Factor | 0.99 (Full Load) |
| Reactive Power Adjustment Range | -0.8 – 0.8 (Leading Adjustable) |
| Total Harmonic Distortion (THD) | <5% (Full Load) |
| Transfer Time | 20ms (Default) | 10ms (Configurable) | 20ms (Parallel) |
| Rated Output Current | 50A @ 240V | 57.7A @ 208V |
| Nominal Output Voltage | 120/240VAC | 120/208VAC |
| Rated Output Power | 12,000W @ 240VAC | 12,000W @ 208VAC |
| Peak Power | 20,000W (0.5 sec) | 15,000W (1 sec) | 12,500W (6 min) | 11,000W (12 min) |
| Operating Frequency | 60 Hz (Default) | 50 Hz |
| Total Harmonic Distortion Voltage | <5% |
| Number of MPPTs | 2 |
| Inputs per MPPT | 2 (MPPT 1) | 2 (MPPT 2) |
| Max Usable Input Current | 26A (MPPT 1) | 26A (MPPT 2) |
| Max Short Circuit Input Current | 31A (MPPT 1) | 31A (MPPT 2) |
| DC Input Voltage Range | 100 – 600VDC |
| Unit Start-Up Voltage | 200VDC |
| MPPT Operating Voltage Range | 120 – 440VDC |
| Nominal MPPT Voltage | 360VDC |
| Max Utilized PV Array Power | 18,000W |
| Max Recommended PV Input | 18,000W |
| Maximum Efficiency | 97.5% (PV → Grid) | 94.5% (PV → Battery) | 94% (Battery → Grid) |
| Idle Consumption | <65W |
| Nominal Battery Voltage | 48VDC |
| Battery Voltage Range | 40 – 60VDC |
| Max Charge / Discharge Power | 10,000W |
| Recommended Battery Capacity | >300Ah per inverter |
| Operating / Storage Temperature | -13°F – 140°F (-25°C – 60°C) |
| Operating Altitude | <6,561 ft (2000 m) |
| Relative Humidity | 0 – 100% |
| Typical Noise Emission | <50 dB @ 3 ft |
| Design Topology | High-Frequency / Transformerless |
| Protection Rating | IP65 / NEMA 4X |
| Communications | RS485 / CANBus / WiFi / 4G |
| Max Parallel Connections | 10 |
| Weight | 115 lbs (52 kg) |
| Dimensions (H × W × D) | 30.5 × 22.8 × 11.2 in (775 × 567 × 287 mm) |
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