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Fronius Primo 3.8kW GEN24 Grid-Tied Solar Inverter 208/240VAC MPN 4,210,140,800

Fronius Primo 3.8kW GEN24 Grid-Tied Solar Inverter 208/240VAC MPN 4,210,140,800

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Fronius Primo 3.8kW GEN24 Grid-Tied Solar Inverter 208/240VAC MPN 4,210,140,800

Fronius Primo 3.8kW GEN24 Grid-Tied Solar Inverter 208/240VAC MPN 4,210,140,800

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MPN No: 4,210,140,800
Regular price $1,699.99 -13% $1,472.18

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Regular price $1,699.99 -13% $1,472.18

Fronius Primo 3.8kW GEN24 Grid-Tied Solar Inverter 208/240VAC MPN 4,210,140,800

The Fronius Primo GEN24 3.8 is a premium single-phase grid-tied solar inverter designed for residential photovoltaic systems requiring reliable 208/220/240VAC operation, smart monitoring, and flexible system design. Built with Fronius Dynamic Peak Manager shade management, SuperFlex Design, Active Cooling Technology, and integrated PV Point backup capability, this inverter helps maximize energy production while supporting long-term reliability.

The Primo GEN24 platform is designed for future-ready solar installations. With PV Point, the inverter can provide daytime backup power from solar when the grid is down, and it can be upgraded through Fronius UP.storage software to enable battery connection and Full Backup functionality when used with the required external grid-separation equipment.


Key Technology

  • 3.8kW Single-Phase Output
    Provides reliable solar power conversion for residential PV systems.

  • Dynamic Peak Manager
    Integrated shade management helps optimize PV production at the string level.

  • Dual MPPT Design
    Supports flexible string design for multiple roof orientations.

  • PV Point Backup Power
    Provides a dedicated backup power outlet from solar energy when sunlight is available.

  • Future Battery Upgrade
    Upgradeable to GEN24 Plus through Fronius UP.storage software for battery and Full Backup capability.

  • Active Cooling Technology
    Protects internal components from heat stress for improved service life.

  • Integrated Monitoring
    Supports Fronius Solar.web, Modbus TCP, Fronius Solar API, WLAN, and dual Ethernet LAN.

  • Built-In Protection
    Includes DC disconnect, reverse polarity protection, DC insulation monitoring, and Arc Fault Circuit Interruption.


Best Uses

  • Residential Solar Systems
    Ideal for home solar installations using 208/220/240VAC service.
  • Small Rooftop PV Arrays
    Excellent for compact systems requiring high efficiency and flexible string design.
  • Backup-Ready Solar Installations
    Provides PV Point backup power without requiring a battery.
  • Future Battery Storage Systems
    Supports upgrade path to battery connection and Full Backup functionality.
  • Smart Energy Monitoring
    Works with Fronius Solar.web for online and mobile system monitoring.

Warranty

  • Product Type: Single-Phase Grid-Tied String Inverter
  • AC Rated Power: 3,800W
  • Maximum Efficiency: Up to 97.6%
  • Protection Rating: Type 4X

Product Specifications

Specification Details
Manufacturer Fronius
Part Number 4,210,140,800
Model Primo GEN24 3.8 208-240
Product Type Single-Phase Grid-Tied String Inverter
AC Rated Output Power 3,800W
Apparent Power 3,800VA
Maximum Output Power 3,800VA
Grid Connection 1~NPE 208V / 220V / 240V
Nominal AC Output Current 18.13A at 208V / 17.3A at 220V / 15.8A at 240V
Frequency 50Hz / 60Hz
Number of MPPTs 2
DC Input Voltage Range 65V - 600V DC
Nominal Input Voltage 360V at 208V / 380V at 220V / 400V at 240V
Feed-In Start Voltage 80V DC
Usable MPPT Voltage Range 65V - 530V DC
MPPT Voltage Range at Rated Power 200V - 480V DC
Maximum Usable Input Current 22A MPPT1 / 12A MPPT2
Maximum Short Circuit Current 36A MPPT1 / 19A MPPT2
Number of DC Connections 2 per MPPT
Maximum Usable DC Power 3,940W Total
Maximum PV Generator Output 5,700Wpeak
PV Point Output Power 1,560VA at 120V / 2,860VA at 220V / 3,120VA at 240V
PV Point Voltage 1~NPE 120V / 220V / 240V
PV Point Switching Time <23 Seconds
Future Battery Input Available with GEN24 Plus Upgrade
Battery Voltage Range After Upgrade 150V - 455V DC
Maximum Battery Input Current After Upgrade 22A
Full Backup Output After Upgrade 3,800VA at 220V / 240V
Full Backup Switching Time After Upgrade <35 Seconds
Maximum Efficiency 97.4% at 208/220V; 97.6% at 240V
CEC Efficiency 96.5%
MPP Adjustment Efficiency >99.9%
Protection Features DC Insulation Measurement, DC Disconnector, Reverse Polarity Protection, Arc Fault Circuit Interruption
Communication WLAN, 2 × Ethernet LAN, Modbus TCP, Fronius Solar API (JSON)
Monitoring Platform Fronius Solar.web
Data Logger and Web Server Integrated
Cooling Method Active Cooling Technology
Protection Class Type 4X
Installation Indoor or Outdoor
Operating Temperature -40°F to +140°F (-40°C to +60°C)
Permissible Humidity 0% - 100%
Noise Emissions <42 dB(A)
Maximum Altitude 13,123 ft (4,000 m)
Dimensions 20.4 × 18.7 × 6.5 in 
Weight 33.24 lbs 
Country of Manufacture Austria
Certifications UL1741 Third Edition, UL1741 SA/SB, UL1998, IEEE1547, FCC Part 15, CSA C22.2, UL1699B

 

About Fronius:

Fronius is a global manufacturer of advanced solar inverters, monitoring platforms, and renewable energy technologies. Known for reliable engineering, intelligent system monitoring, and installer-friendly designs, Fronius products are built to deliver high-performance photovoltaic power conversion for modern solar systems.


Compact GEN24 Performance with Built-In Solar Backup

The Fronius Primo GEN24 3.8 combines dual MPPT flexibility, Dynamic Peak Manager shade optimization, Active Cooling Technology, PV Point backup power, and integrated monitoring into a compact inverter platform designed for reliable residential solar performance.

 

Why Buy From US Solar Supplier

US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.

Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.


Need Assistance?

Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We're here to help with product details, compatibility questions, or purchasing support.