Maxeon Solar SPR-MAX3-375-BLK
Maxeon Solar SPR-MAX3-375-BLK
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Maxeon Solar SPR-MAX3-375-BLK

Maxeon Solar SPR-MAX3-375-BLK

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In Stock

Get yours today!

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9+ sold

In the last 7 days

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Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

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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.

Maxeon SPR-MAX3-375-BLK 375W Back Contact Residential Solar Panel

Model SPR-MAX3-375-BLK | Back Contact | 104 Monocrystalline Cells | Monofacial | 1000V System Voltage

375 W
Max Power Output
21.2%
Module Efficiency
104
N-Type TOPCon

Product Overview

The Maxeon SPR-MAX3-375-BLK 375W Back Contact Residential Solar Panel delivers high power in a compact, all black format designed for premium home installations. This Maxeon solar panel combines sleek aesthetics with industry leading performance, offering up to 21.2% module efficiency for maximum energy generation on limited roof space. Its 104 monocrystalline back contact cells use a solid metal foundation that resists cracking and corrosion, supporting reliable production over decades. The panel is engineered for real world conditions, with strong output under high temperatures and partial shading. Homeowners benefit from a robust 40 year product warranty and long term power guarantees that help protect lifetime energy yield. With its durable construction, IP68 junction box, anti reflective tempered glass, and proven field reliability, this model is ideal for long lasting residential rooftop systems where performance, appearance, and warranty strength matter.

Key Benefits

High power density for limited roof space: With a rated output of 375 watts and up to 21.2% efficiency, this module generates more energy per square meter, making it ideal for compact or shaded roofs where every panel position is valuable.

Premium all black residential design: The black cells, frame, and backsheet create a uniform appearance that blends into modern rooftops, providing a refined architectural look without sacrificing performance or durability.

Exceptional long term reliability: Back contact cell technology with a solid metal base reduces cell stress and micro cracking, helping the panel maintain output over time and supporting a low annual degradation rate of around 0.31%.

Strong performance in real world conditions: Optimised temperature coefficients and robust cell design support higher energy production in high heat, low light, and partial shade, helping to stabilise yield across seasons and climates.

Extended product and power warranties: The 40 year product warranty and long duration power warranty, including 15 years at 94.5% and 30 years at 90.75% output, provide strong assurance for long term investment in residential solar.

How It Works

This residential solar panel converts sunlight into usable DC electricity using advanced Maxeon back contact cell technology and high efficiency monocrystalline silicon. Sunlight strikes the anti reflective tempered glass and passes into the 104 monocrystalline cells, where photons release electrons and generate electrical current. The unique back contact design relocates all current carrying metal to the rear of each cell, so the front surface remains highly active and free of shading from busbars. This structure increases light capture and improves resistance to cracking and corrosion over time. Generated DC power flows through the internal cell interconnections to the IP68 rated junction box and MC4 connectors, then into the external wiring and inverter. The inverter converts DC power to AC electricity that can be used in the home, exported to the grid, or stored in compatible battery systems. The low temperature coefficient and engineered cell layout help stabilise output during hot weather, while the robust frame and glass ensure mechanical strength under wind and snow loading on the roof.

Back contact cell architecture: All conductive pathways are positioned on the rear of the cell, which removes front side busbar shading and increases the active light capturing area. This improves conversion efficiency and supports higher power output within the same footprint compared to many conventional front contact modules.

Optimised thermal and low light response: The panel uses a Pmax temperature coefficient of around -0.27% per degree Celsius, which helps reduce performance losses on hot days. Enhanced low light behaviour allows the module to keep producing useful energy in overcast conditions and during early morning and late afternoon hours.

Integrated protection and power delivery: An IP68 rated junction box with three bypass diodes helps protect the module during partial shading by limiting localised hot spots and maintaining string voltage. Durable MC4 connectors and 1200 mm factory fitted cables make series or parallel connections straightforward for installers and support stable long term power delivery to the inverter.

Technical Specifications

Model Number SPR-MAX3-375-BLK
Nominal Power (Pmax) 375 Wp
Power Tolerance 0 to +5 %
Module Efficiency Up to 21.2 %
Rated Voltage (Vmpp) 62.5 V
Rated Current (Impp) 6.00 A
Open Circuit Voltage (Voc) 74.9 V (+/−3 %)
Short Circuit Current (Isc) 6.52 A (+/−3 %)
Maximum System Voltage 1000 V IEC
Maximum Series Fuse Rating 20 A
Power Temperature Coefficient (Pmax) −0.27 % / °C
Voltage Temperature Coefficient (Voc) −0.236 % / °C
Current Temperature Coefficient (Isc) +0.058 % / °C
Operating Temperature Range −40 °C to +85 °C
Total Degradation Rate Approx. 0.31 % per year
Panel Dimensions (H x W x D) 1690 x 1046 x 40 mm
Weight 19 kg
Cell Count and Type 104 monocrystalline Maxeon Gen III back contact cells
Glass Type High transmission tempered glass with anti reflection coating
Frame Material Black anodized aluminium, Class 1
Junction Box IP68 rated junction box with 3 bypass diodes
Connector Type MC4 compatible connectors
Cable Length 1200 mm

Certifications & Compliance

Certifications: IEC 61215 and IEC 61730 design and safety testing, including additional lab tests for ammonia, desert dust, and salt mist exposure for selected Maxeon production lines.
Inverter Compatibility: Designed for use with modern residential grid tied string inverters and hybrid inverters rated up to 1000 V DC input, using MC4 compatible connectors for broad system compatibility.
Environmental: Operating temperature from −40 °C to +85 °C, IP68 junction box for enhanced moisture protection, and robust mechanical design tested for demanding wind and snow loads on residential rooftops.
Warranty: 40 year product warranty supported by Maxeon Solar Technologies, with a power warranty targeting 94.5 % output at 15 years and 90.75 % output at 30 years, based on an annual degradation rate of around 0.31 % under standard test conditions.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

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.

Maxeon SPR-MAX3-375-BLK 375W Back Contact Residential Solar Panel

Model SPR-MAX3-375-BLK | Back Contact | 104 Monocrystalline Cells | Monofacial | 1000V System Voltage

375 W
Max Power Output
21.2%
Module Efficiency
104
N-Type TOPCon

Product Overview

The Maxeon SPR-MAX3-375-BLK 375W Back Contact Residential Solar Panel delivers high power in a compact, all black format designed for premium home installations. This Maxeon solar panel combines sleek aesthetics with industry leading performance, offering up to 21.2% module efficiency for maximum energy generation on limited roof space. Its 104 monocrystalline back contact cells use a solid metal foundation that resists cracking and corrosion, supporting reliable production over decades. The panel is engineered for real world conditions, with strong output under high temperatures and partial shading. Homeowners benefit from a robust 40 year product warranty and long term power guarantees that help protect lifetime energy yield. With its durable construction, IP68 junction box, anti reflective tempered glass, and proven field reliability, this model is ideal for long lasting residential rooftop systems where performance, appearance, and warranty strength matter.

Key Benefits

High power density for limited roof space: With a rated output of 375 watts and up to 21.2% efficiency, this module generates more energy per square meter, making it ideal for compact or shaded roofs where every panel position is valuable.

Premium all black residential design: The black cells, frame, and backsheet create a uniform appearance that blends into modern rooftops, providing a refined architectural look without sacrificing performance or durability.

Exceptional long term reliability: Back contact cell technology with a solid metal base reduces cell stress and micro cracking, helping the panel maintain output over time and supporting a low annual degradation rate of around 0.31%.

Strong performance in real world conditions: Optimised temperature coefficients and robust cell design support higher energy production in high heat, low light, and partial shade, helping to stabilise yield across seasons and climates.

Extended product and power warranties: The 40 year product warranty and long duration power warranty, including 15 years at 94.5% and 30 years at 90.75% output, provide strong assurance for long term investment in residential solar.

How It Works

This residential solar panel converts sunlight into usable DC electricity using advanced Maxeon back contact cell technology and high efficiency monocrystalline silicon. Sunlight strikes the anti reflective tempered glass and passes into the 104 monocrystalline cells, where photons release electrons and generate electrical current. The unique back contact design relocates all current carrying metal to the rear of each cell, so the front surface remains highly active and free of shading from busbars. This structure increases light capture and improves resistance to cracking and corrosion over time. Generated DC power flows through the internal cell interconnections to the IP68 rated junction box and MC4 connectors, then into the external wiring and inverter. The inverter converts DC power to AC electricity that can be used in the home, exported to the grid, or stored in compatible battery systems. The low temperature coefficient and engineered cell layout help stabilise output during hot weather, while the robust frame and glass ensure mechanical strength under wind and snow loading on the roof.

Back contact cell architecture: All conductive pathways are positioned on the rear of the cell, which removes front side busbar shading and increases the active light capturing area. This improves conversion efficiency and supports higher power output within the same footprint compared to many conventional front contact modules.

Optimised thermal and low light response: The panel uses a Pmax temperature coefficient of around -0.27% per degree Celsius, which helps reduce performance losses on hot days. Enhanced low light behaviour allows the module to keep producing useful energy in overcast conditions and during early morning and late afternoon hours.

Integrated protection and power delivery: An IP68 rated junction box with three bypass diodes helps protect the module during partial shading by limiting localised hot spots and maintaining string voltage. Durable MC4 connectors and 1200 mm factory fitted cables make series or parallel connections straightforward for installers and support stable long term power delivery to the inverter.

Technical Specifications

Model Number SPR-MAX3-375-BLK
Nominal Power (Pmax) 375 Wp
Power Tolerance 0 to +5 %
Module Efficiency Up to 21.2 %
Rated Voltage (Vmpp) 62.5 V
Rated Current (Impp) 6.00 A
Open Circuit Voltage (Voc) 74.9 V (+/−3 %)
Short Circuit Current (Isc) 6.52 A (+/−3 %)
Maximum System Voltage 1000 V IEC
Maximum Series Fuse Rating 20 A
Power Temperature Coefficient (Pmax) −0.27 % / °C
Voltage Temperature Coefficient (Voc) −0.236 % / °C
Current Temperature Coefficient (Isc) +0.058 % / °C
Operating Temperature Range −40 °C to +85 °C
Total Degradation Rate Approx. 0.31 % per year
Panel Dimensions (H x W x D) 1690 x 1046 x 40 mm
Weight 19 kg
Cell Count and Type 104 monocrystalline Maxeon Gen III back contact cells
Glass Type High transmission tempered glass with anti reflection coating
Frame Material Black anodized aluminium, Class 1
Junction Box IP68 rated junction box with 3 bypass diodes
Connector Type MC4 compatible connectors
Cable Length 1200 mm

Certifications & Compliance

Certifications: IEC 61215 and IEC 61730 design and safety testing, including additional lab tests for ammonia, desert dust, and salt mist exposure for selected Maxeon production lines.
Inverter Compatibility: Designed for use with modern residential grid tied string inverters and hybrid inverters rated up to 1000 V DC input, using MC4 compatible connectors for broad system compatibility.
Environmental: Operating temperature from −40 °C to +85 °C, IP68 junction box for enhanced moisture protection, and robust mechanical design tested for demanding wind and snow loads on residential rooftops.
Warranty: 40 year product warranty supported by Maxeon Solar Technologies, with a power warranty targeting 94.5 % output at 15 years and 90.75 % output at 30 years, based on an annual degradation rate of around 0.31 % under standard test conditions.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing
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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.

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.

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Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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