EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input

Versatile and Powerful Hybrid Inverter

The EG4 FlexBOSS21 is a versatile 48V split-phase, hybrid inverter/charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5-ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs give users optimal control over their solar needs, while the updated EG4 monitoring software allows for convenient total remote management, complete with mobile notifications and remote setting. Seamless interaction with GridBOSS gives users control over their entire Energy Storage System (ESS).

EG4 FlexBOSS21 Hybrid Inverter Key Features

• Flexible Power Options: Operate off-grid, with grid support, or sell excess power back to the grid.
• High PV Input Voltage: Supports up to 600V DC, allowing reduced cable sizes.
• Smart Connectivity: Remote access with Wi-Fi and closed-loop communication with compatible batteries.
• Safety-First Design: Includes rapid shutdown, ground fault monitoring, arc-fault protection, and robust safety certifications. 

Specifications

• Input Voltage Range: 120/240VAC; 120/208VAC (Split-phase)
• Output Power: 16kW continuous, with a peak surge capacity of 24kW
• Dimensions: 29.5 x 20.5 x 11.2 inches
• Weight: 88 lbs 
• Warranty: 10-year standard warranty, covering all major components 

Why Choose EG4 FlexBOSS21? The FlexBOSS21 combines efficiency, durability, and innovation, making it a top choice for those seeking robust energy solutions. Its advanced monitoring and safety features provide reliable power and peace of mind for residential or commercial installations.

Elevate Your Energy Solutions Today: Explore the potential of the EG4 FlexBOSS21 Hybrid Inverter and enhance your energy management system.

Important Breaker Information for Pairing with the EG4 GridBoss

Each EG4 GridBoss unit includes:

• 70A Breaker: Compatible only with the EG4 18kPV Hybrid Inverter.
• Smart Port Breakers: Rated at 30A, 40A, 60A, and 80A. 

Please Note:

• You must purchase a 90A Breaker separately for use with the EG4 FlexBoss21 Hybrid Inverter, you can easily add this to your cart directly from this page.
• You must purchase a 50A Breaker separately for use with the EG4 12kPV Hybrid Inverter.
• A 125A Breaker (sold separately) can be used with either the Smart Port or Gen Port.