Can the Solis 3.0kW inverter be used for home solar systems?

Absolutely. Its single-phase design, compact size, and high efficiency make it ideal for residential solar installations in the U.S.

Is the Solis 1P3K-4G-US-SPRT weather-resistant?

Yes. It comes with an IP65 protection rating, making it suitable for both indoor and outdoor installations.

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Solis 3.0kW 1-Phase 2-MPPT String Inverter - 1P3K-4G-US-SPRT

Solis 3.0kW 1-Phase 2-MPPT String Inverter - 1P3K-4G-US-SPRT

Solis 3.0kW 1-Phase 2-MPPT String Inverter - 1P3K-4G-US-SPRT — PES Supply

Front view of Solis 4G Series white solar inverter with control panel display

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Lifetime Customer Support

Unlimited lifetime support, always available.

Trusted by 1,000s of Contractors & Installers

In Stock

SKU PES-SPS-SIV-0117

Solis 3.0kW 1-Phase 2-MPPT String Inverter - 1P3K-4G-US-SPRT

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$1,333.16 USD

$ $1,333.16 USD

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In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

Request a Free Quote

Got Questions? We’re Here to Help!

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Specifications

Datasheet

Power Rating 3 kW

Input Voltage 90-520 V

Output Voltage 240 V / 208 V

Efficiency 97.8%

Mppt Count 2

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

Solis 3.0kW Single-Phase String Inverter with Dual MPPT

The Solis 1P 3.0KW-4G-US-SPRT inverter is engineered for efficiency and reliability. This single-phase inverter with dual Maximum Power Point Tracking (MPPT) technology seamlessly integrates into solar PV setups, maximizing energy harvest and providing optimal performance. Designed for residential and commercial applications, it combines high efficiency with user-friendly features to meet diverse needs.

Product Features

High Efficiency Performance

Featuring a maximum efficiency of 98.1%, the Solis 1P3K-4G-US-SPRT ensures optimal energy conversion, helping you get the most from your solar power system.

Advanced Frequency Switching

With high-frequency switching technology, this inverter delivers excellent efficiency and reduced energy losses, enhancing overall system performance.

Precise MPPT Design

This inverter includes two MPPT inputs, allowing for precise energy capture and effective power management, especially in challenging conditions.

Lightweight and Compact Build

The compact and lightweight design of the Solis inverter ensures easy installation, making it a convenient choice for various deployment scenarios.

Seamless Grid Connectivity

Engineered for flexibility, the inverter offers adaptable grid connection capabilities, supporting reliable energy distribution and integration.

How It Works

The Solis 1P3K-4G-US-SPRT inverter converts the direct current (DC) generated by solar panels into alternating current (AC), making it suitable for home or business use. It features advanced technological components that ensure efficient energy conversion and reliable power delivery.

DC-AC Conversion

This inverter plays a crucial role in transforming solar-generated DC power into usable AC electricity for your devices and household needs.

MPPT Operation

The dual MPPT tracks the maximum power point of solar panels, ensuring optimal power output even under varying conditions.

Grid Synchronization

Seamlessly integrates with the grid, maintaining stable and consistent energy supply to your home or business operations.

Specifications

Max. PV Power	3.5kW
Max. Input Voltage	600V
Rated Output Power	3kW
Max. Apparent Output Power	3.3kVA
Rated Grid Voltage	1/N/PE, 220/230V
Max. Efficiency	98.1%
*Dimensions (WHD)*	310543160 mm
Weight	11.5kg
Ingress Protection	IP65
Cooling Concept	Natural convection

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Solis 3.0kW Single-Phase String Inverter with Dual MPPT

Product Features

High Efficiency Performance

Featuring a maximum efficiency of 98.1%, the Solis 1P3K-4G-US-SPRT ensures optimal energy conversion, helping you get the most from your solar power system.

Advanced Frequency Switching

With high-frequency switching technology, this inverter delivers excellent efficiency and reduced energy losses, enhancing overall system performance.

Precise MPPT Design

This inverter includes two MPPT inputs, allowing for precise energy capture and effective power management, especially in challenging conditions.

Lightweight and Compact Build

The compact and lightweight design of the Solis inverter ensures easy installation, making it a convenient choice for various deployment scenarios.

Seamless Grid Connectivity

Engineered for flexibility, the inverter offers adaptable grid connection capabilities, supporting reliable energy distribution and integration.

How It Works

DC-AC Conversion

This inverter plays a crucial role in transforming solar-generated DC power into usable AC electricity for your devices and household needs.

MPPT Operation

The dual MPPT tracks the maximum power point of solar panels, ensuring optimal power output even under varying conditions.

Grid Synchronization

Seamlessly integrates with the grid, maintaining stable and consistent energy supply to your home or business operations.

Specifications

Max. PV Power	3.5kW
Max. Input Voltage	600V
Rated Output Power	3kW
Max. Apparent Output Power	3.3kVA
Rated Grid Voltage	1/N/PE, 220/230V
Max. Efficiency	98.1%
*Dimensions (WHD)*	310543160 mm
Weight	11.5kg
Ingress Protection	IP65
Cooling Concept	Natural convection

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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