Fronius Primo 3.8-1 solar inverter with LCD display and sleek gray casing
Fronius Primo 3.8-1 solar inverter with LCD display and sleek gray casing

FRONIUS PRIMO 3.8kW Single Phase Inverter 4,210,064,800

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Fronius Primo 3.8-1 solar inverter with LCD display and sleek gray casing

Fronius

FRONIUS PRIMO 3.8kW Single Phase Inverter 4,210,064,800

$0.00 $1,555.00
Fronius Primo 3.8-1 solar inverter with LCD display and sleek gray casing

Fronius

FRONIUS PRIMO 3.8kW Single Phase Inverter 4,210,064,800

$0.00 $1,555.00
  • Description

Fronius Primo 3.8kW 208-240VAC Single Phase String Inverter 4,210,064,800

Discover the Fronius Primo 3.8-1, a top-tier single-phase string inverter designed for the modern residential solar PV system. Offering a blend of high efficiency, smart connectivity, and unparalleled reliability, it's crafted to maximize your solar investment.

  • Advanced MPPT technology for superior solar energy conversion.
  • Integrated Wi-Fi and Ethernet connectivity for effortless monitoring and system management.
  • Smart Grid Ready, ensuring compatibility with future energy systems.
  • Easy installation with the innovative SnapINverter mounting system.
  • Dual MPP trackers for optimized solar production.

Technology and Overview

Featuring state-of-the-art technology, the Primo 3.8-1 delivers outstanding performance and efficiency, making it a leading choice for residential installations.

Installation and Compatibility Overview

Its design ensures straightforward installation and broad compatibility, offering flexibility for various home solar projects.

Benefits and Applications Overview

This inverter not only reduces energy bills but also contributes to a sustainable future, making it perfect for eco-conscious homeowners.

Specification Value
Model PRIMO 3.8-1
Recommended PV power (kWp) 3.0 - 6.0 kW
Max. Input Current (MPPT 1/MPPT 2 - 18 A / 18 A) (MPPT 1+MPPT 2 - 36 A)
Nominal Input Voltage 410 V
Max. Input Voltage 600 V (1,000 V optional2 )
Max. Output Power (208V / 240V) 3,800 VA
Max. Continuous Output Current (208V / 240V) 18.3 A  / 15.8 A
Frequency Range 45-55 Hz / 50 - 66 Hz
Max. Efficiency 96.7 %
CEC Efficiency 600 V/1,000 V 95.0 %
Cooling Variable speed fan
Warranty 10 years / extensions up to 15 and 20 years available 1

Frequently Asked Questions

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Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

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Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
★★★★★

Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
★★★★★

Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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