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3.5KW Off-grid Solar Inverter - Pure Sine Wave, 48V DC, 240VAC, China Suppliers, Factory Direct Price

Introducing our high-performance Solar Off-grid Inverter, available in 3.5KW, 5.5KW, and 10KW models. Designed to provide a pure sine wave output, this inverter operates on a 48V DC input, delivering 240VAC AC power at 50/60Hz. Our inverters are equipped with built-in MPPT charge controllers with options of 60A, 100A, and 200A, ensuring optimal energy efficiency and performance. As a leading factory and supplier in China, we offer reliable and innovative solar solutions that meet the diverse needs of off-grid applications

    ⚡ 3.5KW / 5.5KW / 10KW Solar Off-grid Inverter — Pure Sine Wave | 48V DC | 240VAC | 50/60Hz | Built-in 60A / 100A / 200A MPPT Charge Controller
    Solar Off-grid Inverter 3.5KW 5.5KW 10KW

    📋 Technical Specifications

    Model SST48HW3.5K SST48HW5.5K SST48HW10K
    Inverter Output
    Rated Output Power (W) 3500 5500 10000
    Rated Output Power (VA) 3500 5500 10000
    Maximum Peak Power (W) 6000 10000 15000
    Load Capacity with Motors (HP) 2 4 6
    Rated AC Output 230 VAC (200 / 208 / 220 / 240VAC), 50 / 60Hz
    Output Voltage Waveform Pure Sine Wave
    Inverter and Bypass Switching Time 10ms (Typical)
    Parallel Capacity 9
    Maximum Battery Inverter Efficiency 93%
    Overload Protection 102%~110%, 5min; 110%~125%, 10s; >125%, 2s
    Battery
    Battery Type Lithium / Lead-acid / User Defined
    Rated Battery Voltage (VDC) 48
    Battery Voltage Range (VDC) 40~60
    Max. MPPT Charging Current (A) 60 100 200
    Max. Mains Charging Current (A) 60 60 120
    Max. Hybrid Charging Current (A) 80 100 200
    Charging Current Error (ADC) ±3
    Charging Short Circuit Protection Blown Fuse
    PV Charging
    MPPT Quantity 1 2
    Max. PV Array Power (W) 4000 5500 5500+5500
    Max. PV Input Current (A) 13 22 22+22
    Max. Open Circuit Voltage (VAC) 500 500+500
    MPPT Voltage Range (VDC) 120~450
    MPPT Tracking Efficiency 99.9%
    Mains Input
    Input Voltage Range (VAC) 90~280 / 170~280
    Frequency Range (Hz) 50 / 60±0.3
    Output Short Circuit Protection Circuit Breaker
    Bypass Overload Current (A) 30 40 63
    Specifications
    Dimensions (D*W*H) mm 130*350*455 130*445*630
    Weight (kg) 11 12 27
    Classification of Waterproof IP20
    Operating Temperature Range (℃) -10~55
    Storage Temperature Range (℃) -25~60
    Noise (dB) <60
    Heat Dissipation Forced Air Cooling (Variable Speed Of Fan)
    Communication
    Embedded Interface RS485 / CAN / USB / Dry Contact
    External Module WIFI / GPRS
    Certification
    Safety CE (IEC62109-1)
    EMC EN61000
    ⚠️ Note: Above data are subject to change without notice. Special voltage could be customized.
    Solar Inverter Details

    🌍 Applications

    Solar Inverter Applications

    This product is suitable for home emergency, remote areas with insufficient power supply, rural areas and farms, disaster relief and emergency, small commercial and industrial facilities, off-grid tourist facilities, areas with high power costs, remote monitoring and control stations, etc.

    🏆 Product Advantages

    ☀️ 1. 3.5KW / 5.5KW / 10KW Off-grid Solar Inverter

    Solar Off-grid Inverter is a new all-in-one off-grid solar charge inverter, which integrates solar energy storage & mains charging energy storage and AC sine wave output.

    • Advanced SPWM technology output of pure sine wave.
    • Optimized MPPT technology with an efficiency of 99.9%.
    • Available in 4 charging modes.
    • Designed with an LCD screen and 3 LED indicators for dynamic display.
    Off-grid Solar Inverter Overview
    ⚙️ 2. Important Specification

    Employed advanced SPWM technology and outputs pure sine wave to convert 48V DC to 90V–280V AC, 50Hz/60Hz frequency (Auto detection). Max PV open circuit voltage 100 Vdc; PV operating voltage range 30–100 Vdc; MPPT voltage range 120–450 Vdc; Max 4000W input; Max 35000W output; Fit for 48V Lead-Acid (seal, AGM, Gel, Flooded) and Lithium battery.

    Solar Inverter Key Specifications
    🛡️ 3. Safe and Reliable

    The power inverter has 360° all-round protection with a number of protection functions, including short circuit protection, over voltage and under voltage protection, overload protection, reverse protection, etc. Ideal for AC loads such as household appliances, power tools, industrial equipment, and electronic audio and video equipment.

    Safe and Reliable Solar Inverter Protection
    🔄 4. Multiple Working Modes

    4 charging modes — Only Solar, Mains Priority, Solar Priority and Mains & Solar off-grid charging; 2 output modes — mains bypass and inverter output. The inverter is designed with an LCD screen and 3 LED indicators for dynamic display of system data and operating status.

    Multiple Working Modes Solar Inverter
    🔍 5. What Size Inverter Should I Buy?
    1. Size the right power output. Inverters are rated by wattage, telling you how many watts they can run at one time. For example, a 500W fridge and 800W air conditioning total 1300W — you would need an inverter rated above 1300W. (Note: calculation methods differ for variable frequency vs. fixed frequency appliances.)
    2. Check your battery voltage. The DC voltage rating on the inverter tells you what battery bank it is compatible with. For example, a 12V battery bank requires an inverter compatible with 12V DC input.
    3. Size your installation space. Make sure the inverter fits in the space you have in mind, with enough room for proper ventilation and no fire hazards.
    4. Need help? If you're unsure, we provide one-stop service to help you choose the right solution.
    How to Choose the Right Solar Inverter Size

    ❓ Frequently Asked Questions (FAQ)

    Q What is the difference between the SST48HW3.5K, SST48HW5.5K, and SST48HW10K models?
    The three models differ mainly in rated output power (3500W, 5500W, and 10000W), MPPT charging current (60A, 100A, and 200A), maximum PV array power input, and physical dimensions and weight. The 10KW model also features dual MPPT inputs (2 × 5500W), making it suitable for larger solar installations.
    Q What types of batteries are compatible with this solar inverter?
    This inverter supports Lithium batteries, Lead-Acid batteries (including Sealed, AGM, Gel, and Flooded types), as well as a User Defined option, all at a rated voltage of 48V DC with a voltage range of 40–60V.
    Q Can multiple inverters be connected in parallel?
    Yes. This inverter supports parallel connection of up to 9 units, allowing you to significantly expand your system capacity to meet higher power demands.
    Q What protection features does this inverter include?
    The inverter provides comprehensive 360° protection, including short circuit protection, over-voltage and under-voltage protection, overload protection (with staged response from 102% up to >125% load), reverse protection, and charging short circuit protection via blown fuse.
    Q What communication interfaces does this inverter support?
    The inverter includes embedded interfaces for RS485, CAN, USB, and Dry Contact. It also supports optional external modules for WIFI and GPRS connectivity, enabling remote monitoring and system management.
    Q Is this inverter suitable for outdoor or harsh environments?
    The inverter carries an IP20 waterproof rating and operates within a temperature range of -10°C to 55°C (storage: -25°C to 60°C). It uses forced air cooling with a variable-speed fan and produces less than 60dB of noise, making it suitable for a variety of installation environments including home, farm, and commercial settings.