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Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240

(34 ratings)

SpecificationCompareSee all
Input Voltage DC600
Max. input voltage60/72 - 120/144 cell
Output Voltage AC240
TypeGrid-Tie Inverters
Watts3800
Attachments
Fronius Primo 3.8kw inverter FRO-P-3.8-1-208-240

Customer reviews & Questions

Verified buyer reviews

Reviews (34)
Questions (2)

Louis

09/30/2024

Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240

Great service from A1 SolarStore. Unfortunately, the inverter was defective out of the box. Hardware error 407. Fronius tech support is very good. Awaiting the replacement.

Terry2

10/01/2021

Fronius Primo 3.8kW Inverter 3.8-1

The inverter itself is great, but it’s suitable only for very small installations. Well, a 5kW one actually is fine. Too bad it’s grid -tie, i wanted to use it for my van(

Clarus

09/17/2021

Fronius Primo 3.8kW Inverter 3.8-1

man, i love the production. feels like 2 mppts do make a difference. really nothing to complain about here, great inverter, very happy with it.

Mark R

08/11/2021

Fronius Primo 10kW Inverter FRO-P-10.0-1-208-240

I bought Fronius Primo 10kW for a system consisting of 27 modules 370W each. So far so good. A1 Solar had the lowest price, but their standards were up to the expectations. Can recommend both the inverter and the store

Jordan

08/10/2021

Fronius Symo 10 kw Inverter 10.0-3 208240L Advanced

I’ve seen a few inverters fail not long after the warranty’s end. For this model you can extend the warranty up to 20 years with a few clicks on the Fronius website, which is exactly what I’ve been looking for

Steven C.

08/04/2021

Fronius Primo 10kW Inverter FRO-P-10.0-1-208-240

Great 10 year warranty that shows the confidence of the manufacturer in its product. It was a pleasure to work with you, thanks a lot

Milo

08/02/2021

Fronius Primo 12.5 kW Inverter

Great inverter, but software could be better. Spent many hours trying to set up the app to get it working only to have it go offline. Not very intuitive setup. Works 70% of the time and then just goes offline. Then all of a sudden it will connect again.

Jenny and Greg

07/27/2021

Fronius Primo 12.5 kW Inverter

We have this wonderful piece of hardware hooked up to our 10 kW Solar system. Solid, responsive, easy to connect and monitor, what else to say. Happy with the purchase.

K. Watts

07/19/2021

Fronius Symo 10 kw Inverter 10.0-3 208240L Advanced

It replaced a 15 year old inverter also made by Fronius. I noticed that it is much quieter. I also did all the installation myself, so it is a pretty straightforward process. Didn’t have to wait long for delivery and liked the store’s very informative blog

Dave S.

07/12/2021

Fronius Primo 12.5 kW Inverter

Upgraded our old 6.6kw setup to a 12.5kw solar system with a Fronius primo inverter. So far, so good. I love being able to monitor the stats in realtime through the app.

Skyler Barns

06/15/2021

Fronius Symo 10 kw Inverter 10.0-3 208240L Advanced

It’s a very reliable and functional inverter, I say that after working with Symos for years.

Joe Traveler

06/02/2021

Fronius Primo 10kW Inverter FRO-P-10.0-1-208-240

It is a nice solidly built unit with lots of advanced features. Hope it functions well for long

Nine

04/21/2021

Fronius Primo 3.8kW Inverter 3.8-1

Nice and small. Love the design. The service was good too!

Ben

11/25/2020

Fronius Primo 7.6kW Inverter FRO-P-7.6-1-208-240

These guys conduct business exactly the way it’s supposed to be done. We did it a fair bit of research on different outfits in Central Texas, and met with several folks. What stood out about this company was the no-pressure approach, transparent pricing, communication, and all around professionalism

Joe

11/21/2020

Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240

FANTASTIC customer service! I originally called another solar installation company, and after having them NEVER return my phone calls, I decided to give A1 solar a call. I’m SO glad I did! Everyone is extremely knowledgeable and helpful.

Ken

11/06/2020

Fronius Primo 8.2kW Inverter FRO-P-8.2-1-208-240

A1 solar is a very professional and knowledgeable organization. Their staff is very knowledgeable, experienced, and thorough. We would definitely use them again.

Patric

11/01/2020

Fronius Primo 7.6kW Inverter FRO-P-7.6-1-208-240

Very professional, great help finding the right product for building.

Joe

10/19/2020

Fronius Primo 15kW Inverter FRO-P-15.0-1-208-240

We had a really great experience with this service. I’d recommend them to anyone who’s thinking about solar.

Joseph

10/17/2020

Fronius Primo 6kW Inverter FRO-P-6.0-1-208-240

I had an extremely pleasant experience with you guys. Simple, responsive, informative, and brilliantly executed. Highly recommended if you are shopping for solar. Thank you.

John

10/09/2020

Fronius Symo 12kW Inverter FRO-SA-12-3-208L Advanced

Professional, reliable and responsive. Highly Recommended!

Matt

10/09/2020

Fronius Symo 15kW Inverter LITE FRO-S-15.0-3-208L

I appreciated the very quick responses to all questions and concerns even in the evenings and on weekends.

Matthew

09/28/2020

Fronius Primo 5kW Inverter FRO-P-5.0-1-208-240

We have been pleased with A1 solar and our system which is providing power for our business.

Christian

08/26/2020

Fronius Primo 5kW Inverter FRO-P-5.0-1-208-240

Great service and communication! Honest salespeople, good value.

Kenny

08/06/2020

Fronius Primo 15kW Inverter FRO-P-15.0-1-208-240

I was very pleased with my purchase. The information provided by a salesman was instrumental in my decision with which inverter to use. It saved me a lot of time and hassle having to deal with different sales people. They were friendly and knowledgeable and took the time to explain what inverter will be good for my needs.

Aaron

08/03/2020

Fronius Symo 24kW Inverter FRO-SA-24.0-3-480L Advanced

Had a great experience for a first time solar person. They answered all my questions in a timely manner. Thank you.

Nicholas

07/28/2020

Fronius Primo 8.2kW Inverter FRO-P-8.2-1-208-240

Very professional group of folks. Everyone was helpful. Thanks so much. I’m a month in and already ahead of my daily usage!

Jan

07/22/2020

Fronius Symo 24kW Inverter FRO-SA-24.0-3-480L Advanced

Really attentive and knowledgeable crew, and support staff. Excellent communicators; great ethics and transparency with the customer.

James

07/09/2020

Fronius Primo 3.8kW Inverter FRO-P-3.8-1-208-240

Not knowing much about inverter myself, they explained everything I had questions about. I feel confident that they set me up with a good system.

Peter

06/29/2020

Fronius Symo 12kW Inverter FRO-SA-12-3-208L Advanced

We bought a system couple of months ago. It’s currently providing about half of our monthly demand. Our system is somewhat limited by lack of roof space and the orientation of our property but I feel like are getting as much as possible out of it .

Gregory

06/29/2020

Fronius Primo 6kW Inverter FRO-P-6.0-1-208-240

The company was professional and courteous. We enjoyed working with them.

Don

03/24/2020

Fronius Symo 15kW Inverter LITE FRO-S-15.0-3-208L

Excellent customer service Our electric bills are down to the basic service charge of around $11 per month.

Louis

09/30/2024

Great service from A1 SolarStore. Unfortunately, the inverter was defective out of the box. Hardware error 407. Fronius tech support is very good. Awaiting the replacement.

Joe

11/21/2020

James

07/09/2020

Not knowing much about inverter myself, they explained everything I had questions about. I feel confident that they set me up with a good system.

Sam Andrews

09/01/2021

I’m looking for an inverter that can cope with a high altitude, what about this one?

A1 SolarStore

This Fronius Primo Inverter can operate normally at heights of up to 13,120 ft.

R. Wilkinson

08/18/2021

Is it too weak to handle 5 kw of panels?

A1 SolarStore

Recommended PV power for this model is 3 to 6 kWp, so it should be alright.

Specification

Input Voltage DC	600
Max. input voltage	60/72 - 120/144 cell
Output Voltage AC	240
Type	Grid-Tie Inverters
Watts	3800
Rated Efficiency	96.7%
Dimensions LxWxH	31 x 22 x 12 in
Manufacturer	Fronius USA LLC
Manufacturer Part #	FRO-P-3.8-1-208-240
Operating Temperatures	-40 ... +55 °C
Warranty	10 Years Manufacturer
Delivery Time	5-7 Business Days

About product

Fronius Primo 3.8-1 208-240, 3.8kW single phase, string inverter

Manufacturers Part Number: 4.210.064.800
Shipping Weight: 48 lb
Shipping Dimensions: 31 x 22 x 12 in
Pallet Qty: 10

With power categories ranging from 3.8 kW to 15.0 kW, the transformerless Fronius Primo is the ideal compact single-phase inverter for residential applications. The sleek design is equipped with the SnapINverter hinge mounting system which allows for lightweight, secure and convenient installation and service. The Fronius Primo has several integrated features that set it apart from competitors including dual powerpoint trackers, high system voltage, a wide input voltage range, Wi-Fi and SunSpec Modbus interface for seamless monitoring and datalogging, Arc Fault Circuit Interruption (AFCI), and Fronius’ online and mobile platform Fronius Solar.web. The Fronius Primo is designed to adjust to future standards, offering a complete solution to code restrictions and technical innovations of tomorrow. It also works seamlessly with the Fronius Rapid Shutdown Box for a reliable NEC 2014 solution.

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