Off-Grid Hybrid Inverter (FSA-3-4K1P-BL) – 4 kw

The FSA-3-4K1P-BL Off-Grid Hybrid Inverter is a high-performance energy solution that combines solar power generation, battery storage, and grid integration into one intelligent system. Controlled by a DSP (Digital Signal Processor), it ensures fast response, stable operation, and high reliability.

This inverter supports multiple charging modes including solar-only, solar priority, and hybrid charging, allowing maximum utilization of solar energy. It also features an uninterruptible power supply (UPS) function, ensuring seamless power during outages with transfer times as low as 10ms.

Designed for flexibility, it supports both lithium-ion and lead-acid batteries and includes advanced communication options like CAN and RS485 for battery management systems (BMS). With dual AC outputs, it enables smart load prioritization—powering critical and non-critical loads efficiently.

The system also supports parallel operation (up to 9 units), making it scalable for larger energy demands. Additional features like Wi-Fi monitoring, USB firmware upgrades, and generator compatibility make it a versatile and future-ready inverter solution.

Built with safety and durability in mind, the inverter includes multiple protection mechanisms such as overload, short circuit, over-temperature, and surge protection. It is ideal for off-grid applications, ensuring consistent and efficient energy supply in residential and commercial environments.

Size and Other Advanced Options

• Product Model: FSA-3-4K1P-BL
• Nominal Output Power: 3000W / 4000W
• Peak Apparent Power: 6000VA / 8000VA
• Output Voltage: 230V AC
• Waveform: Pure Sine Wave
• Transfer Time: 10ms

Solar Input

• Max PV Input Power: 3300W / 4400W
• Max Input Voltage: 500V
• MPPT Voltage Range: 60V – 450V
• Max Input Current: 18A

Battery

• Battery Type: Lithium-ion / Lead-acid
• Nominal Voltage: 24V
• Voltage Range: 21V – 30V
• Max Charge Current: 120A
• Max Discharge Current: 137A
• Communication: CAN / RS485

AC Input (Grid/Generator)

• Voltage Range: 90V – 280V
• Frequency: 50/60Hz
• Max Input Current: 25A

Efficiency

• Peak Efficiency: 94%
• MPPT Efficiency: ≥99.9%

System Features

• Charging Modes: Solar / Hybrid / Grid
• Power Priority Modes: PV / Grid / Battery
• Parallel Support: Up to 9 units
• Dual AC Outputs for load management
• UPS Functionality
• Wi-Fi Monitoring via Mobile App
• USB Firmware Upgrade Support

Protection Features

• Overload Protection
• Short Circuit Protection
• Over-temperature Protection
• Surge Protection (AC/DC)
• Battery Protection (Over/Under Voltage, Overcurrent)

Physical Specifications

• Size: 290 × 424 × 120 mm
• Weight: 7.15 kg
• Cooling: Fan Cooling
• Noise Level: ≤50dB
• Operating Temperature: -10°C to 60°C
• Protection Level: IP20