Sunceco SEM 330 Diamond
Sunceco SEM 330 Diamond
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Sunceco SEM 330 Diamond

Sunceco SEM 330 Diamond

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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.

Sunceco SEM 330 Diamond 330W Monocrystalline Monofacial Solar Panel

Model SEM 330 Diamond | Monocrystalline Silicon | 72 Full-Cell Standard | Monofacial | 1000V System Voltage

330 Wp
Max Power Output
19.05 %
Module Efficiency
315–345 Wp
Diamond Series Range

Product Overview

The Sunceco SEM 330 Diamond monocrystalline solar panel delivers reliable 330 Wp output with high conversion efficiency. This Diamond Series module is engineered for residential, commercial, and light industrial solar installations. Advanced monocrystalline cells, high transmittance tempered glass, and an anodized aluminum frame work together for durable long term power production. Module efficiency reaches 19.05 percent, placing this panel among premium high yield solutions in its class. The power range from 315 to 345 Wp gives installers flexible system design across the full Diamond Series lineup. Positive power tolerance ensures that every Sunceco SEM 330 Diamond panel delivers its rated output or slightly higher in real conditions. The module is designed to operate in harsh climates, with a wide temperature range and strong resistance to wind and snow loads. With robust warranties and PID free performance, this solar panel supports dependable energy savings over decades of service. The Sunceco SEM 330 Diamond 330W monocrystalline solar panel is a strong choice when efficiency, durability, and long term value are priorities.

Key Benefits

High energy yield from compact footprint: With 330 Wp output and 19.05 percent efficiency, the module delivers strong power density. System designers can achieve more capacity using less roof or ground area.

Excellent low irradiance performance: The Diamond Series is optimized for stable production during cloudy conditions and early morning or late afternoon hours. This helps increase total daily and annual energy harvest.

Robust mechanical strength: The panel is tested for 3800 Pa wind load and 5400 Pa snow load, supporting installations in demanding climates. Reinforced 3.2 mm tempered glass further protects the cells from impact and stress.

Long term reliability and PID free design: Sunceco uses advanced encapsulation and PID resistant cell technology to protect performance. Triple 100 percent electroluminescence testing catches microcracks and hidden defects before shipping.

Bankable warranties and stable degradation: A 15 year product warranty supports material and workmanship quality. Output is backed to 90 percent at 12 years and 80 percent at 25 years, with a low 0.8 percent annual degradation rate.

Versatile applications and easy integration: The 1000 V system voltage rating, standard MC4 compatible connectors, and 4 mm² cables ensure broad inverter compatibility. Installers can integrate the module into new or existing arrays with minimal complexity.

How It Works

The Sunceco SEM 330 Diamond 330W monocrystalline solar panel converts sunlight into clean DC electricity through high quality silicon cells. When photons hit the monocrystalline cells, electrons are energized and move within the cell structure to create an electrical current. This current flows through the module busbars, junction box, and MC4 compatible connectors into your system wiring. At standard test conditions, each panel delivers up to 330 Wp with an operating voltage near 36.68 volts and operating current around 9 amps. In real world environments, the module maintains stable performance thanks to optimized temperature coefficients and robust construction. The generated DC power is then routed to a compatible inverter, which converts it into AC electricity for on site consumption or export to the grid. Across its service life, the panel is designed to maintain at least 80 percent of its original output after 25 years.

Monocrystalline cell energy conversion: Premium monocrystalline silicon cells absorb incoming solar radiation across a wide spectrum. Their internal junctions separate charge carriers efficiently, driving electrons into a usable DC current with minimal resistive loss.

Optimized electrical architecture: At maximum power, the SEM 330 Diamond operates near 36.68 V and 9 A, giving a balanced current and voltage profile. This makes string design straightforward for 1000 V systems and supports strong performance under partial shading or high temperature conditions.

Thermal and environmental management: The panel operates from -40 to 85 degrees Celsius, with a nominal cell temperature of 42 ± 3 degrees. Carefully controlled temperature coefficients for Pmax, Voc, and Isc limit performance loss as module temperature rises during hot, sunny days.

Mechanical protection and longevity: A 3.2 mm high transmittance tempered glass front and anodized aluminum frame shield the cells from impact and structural stress. The IP67 junction box and durable backsheet keep moisture and dust out, preserving insulation and power output for decades.

Technical Specifications

Brand Sunceco Inc., United States
Model SEM 330 Diamond (Diamond Series 315–345 Wp)
Cell Technology and Type Monocrystalline silicon, standard full cells
Power Range (Diamond Series) 315 Wp, 320 Wp, 325 Wp, 330 Wp, 335 Wp, 340 Wp, 345 Wp
Maximum Power at STC (Pmax) 330 Wp
Module Efficiency at STC 19.05 % (range 18.19–19.92 % across series)
Voltage at Maximum Power (Vmpp, STC) 36.68 V
Current at Maximum Power (Impp, STC) 9.00 A
Open Circuit Voltage (Voc, STC) 43.72 V
Short Circuit Current (Isc, STC) 9.45 A
Maximum Power at NMOT (Pmax) 245 Wp
Voltage at Maximum Power (Vmpp, NMOT) 32.92 V
Current at Maximum Power (Impp, NMOT) 7.45 A
Open Circuit Voltage (Voc, NMOT) 40.19 V
Short Circuit Current (Isc, NMOT) 7.83 A
Power Tolerance 0 ~ +5 W positive tolerance (datasheet), 0 ~ +1.5 % typical listing
Maximum System Voltage 1000 V DC
Nominal Operating Cell Temperature (NOCT) 42 ± 3 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.308 % / °C
Temperature Coefficient of Voc -0.243 % / °C
Temperature Coefficient of Isc +0.047 % / °C
Module Dimensions (H × W × D) 1762 × 983 × 35 mm
Weight 19.5 kg
Front Glass 3.2 mm high transmittance tempered reinforced glass
Backsheet Anti aging backsheet film
Frame Anodized aluminum alloy frame
Junction Box Protection Class IP67 rated junction box
Output Cables 4.0 mm² PV cable
Connector Type MC4 compatible connectors

Certifications & Compliance

Certifications: CE compliant; IEC 61215-1, IEC 61215-1-1, IEC 61215-2; IEC 61730-1, IEC 61730-2; application class A; Safety Class II; UL 1703.
Inverter Compatibility: Designed for mainstream 1000 V DC grid tie and off grid inverters using standard MC4 inputs. Always verify string sizing and voltage windows with the selected inverter datasheet.
Environmental: PID free module design with resistance to sand and dust abrasion, plus protection against salt mist and ammonia corrosion. Rated for 3800 Pa wind load, 5400 Pa snow load, and 35 mm hail at 97 km/h.
Warranty: 15 year manufacturing warranty on product materials and workmanship. Performance warranty of 12 years at 90 % of nominal power and 25 years at 80 % of nominal power, corresponding to an estimated 0.8 % annual degradation rate.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing for Sunceco SEM 330 Diamond panels

Customer Reviews

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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.

Sunceco SEM 330 Diamond 330W Monocrystalline Monofacial Solar Panel

Model SEM 330 Diamond | Monocrystalline Silicon | 72 Full-Cell Standard | Monofacial | 1000V System Voltage

330 Wp
Max Power Output
19.05 %
Module Efficiency
315–345 Wp
Diamond Series Range

Product Overview

The Sunceco SEM 330 Diamond monocrystalline solar panel delivers reliable 330 Wp output with high conversion efficiency. This Diamond Series module is engineered for residential, commercial, and light industrial solar installations. Advanced monocrystalline cells, high transmittance tempered glass, and an anodized aluminum frame work together for durable long term power production. Module efficiency reaches 19.05 percent, placing this panel among premium high yield solutions in its class. The power range from 315 to 345 Wp gives installers flexible system design across the full Diamond Series lineup. Positive power tolerance ensures that every Sunceco SEM 330 Diamond panel delivers its rated output or slightly higher in real conditions. The module is designed to operate in harsh climates, with a wide temperature range and strong resistance to wind and snow loads. With robust warranties and PID free performance, this solar panel supports dependable energy savings over decades of service. The Sunceco SEM 330 Diamond 330W monocrystalline solar panel is a strong choice when efficiency, durability, and long term value are priorities.

Key Benefits

High energy yield from compact footprint: With 330 Wp output and 19.05 percent efficiency, the module delivers strong power density. System designers can achieve more capacity using less roof or ground area.

Excellent low irradiance performance: The Diamond Series is optimized for stable production during cloudy conditions and early morning or late afternoon hours. This helps increase total daily and annual energy harvest.

Robust mechanical strength: The panel is tested for 3800 Pa wind load and 5400 Pa snow load, supporting installations in demanding climates. Reinforced 3.2 mm tempered glass further protects the cells from impact and stress.

Long term reliability and PID free design: Sunceco uses advanced encapsulation and PID resistant cell technology to protect performance. Triple 100 percent electroluminescence testing catches microcracks and hidden defects before shipping.

Bankable warranties and stable degradation: A 15 year product warranty supports material and workmanship quality. Output is backed to 90 percent at 12 years and 80 percent at 25 years, with a low 0.8 percent annual degradation rate.

Versatile applications and easy integration: The 1000 V system voltage rating, standard MC4 compatible connectors, and 4 mm² cables ensure broad inverter compatibility. Installers can integrate the module into new or existing arrays with minimal complexity.

How It Works

The Sunceco SEM 330 Diamond 330W monocrystalline solar panel converts sunlight into clean DC electricity through high quality silicon cells. When photons hit the monocrystalline cells, electrons are energized and move within the cell structure to create an electrical current. This current flows through the module busbars, junction box, and MC4 compatible connectors into your system wiring. At standard test conditions, each panel delivers up to 330 Wp with an operating voltage near 36.68 volts and operating current around 9 amps. In real world environments, the module maintains stable performance thanks to optimized temperature coefficients and robust construction. The generated DC power is then routed to a compatible inverter, which converts it into AC electricity for on site consumption or export to the grid. Across its service life, the panel is designed to maintain at least 80 percent of its original output after 25 years.

Monocrystalline cell energy conversion: Premium monocrystalline silicon cells absorb incoming solar radiation across a wide spectrum. Their internal junctions separate charge carriers efficiently, driving electrons into a usable DC current with minimal resistive loss.

Optimized electrical architecture: At maximum power, the SEM 330 Diamond operates near 36.68 V and 9 A, giving a balanced current and voltage profile. This makes string design straightforward for 1000 V systems and supports strong performance under partial shading or high temperature conditions.

Thermal and environmental management: The panel operates from -40 to 85 degrees Celsius, with a nominal cell temperature of 42 ± 3 degrees. Carefully controlled temperature coefficients for Pmax, Voc, and Isc limit performance loss as module temperature rises during hot, sunny days.

Mechanical protection and longevity: A 3.2 mm high transmittance tempered glass front and anodized aluminum frame shield the cells from impact and structural stress. The IP67 junction box and durable backsheet keep moisture and dust out, preserving insulation and power output for decades.

Technical Specifications

Brand Sunceco Inc., United States
Model SEM 330 Diamond (Diamond Series 315–345 Wp)
Cell Technology and Type Monocrystalline silicon, standard full cells
Power Range (Diamond Series) 315 Wp, 320 Wp, 325 Wp, 330 Wp, 335 Wp, 340 Wp, 345 Wp
Maximum Power at STC (Pmax) 330 Wp
Module Efficiency at STC 19.05 % (range 18.19–19.92 % across series)
Voltage at Maximum Power (Vmpp, STC) 36.68 V
Current at Maximum Power (Impp, STC) 9.00 A
Open Circuit Voltage (Voc, STC) 43.72 V
Short Circuit Current (Isc, STC) 9.45 A
Maximum Power at NMOT (Pmax) 245 Wp
Voltage at Maximum Power (Vmpp, NMOT) 32.92 V
Current at Maximum Power (Impp, NMOT) 7.45 A
Open Circuit Voltage (Voc, NMOT) 40.19 V
Short Circuit Current (Isc, NMOT) 7.83 A
Power Tolerance 0 ~ +5 W positive tolerance (datasheet), 0 ~ +1.5 % typical listing
Maximum System Voltage 1000 V DC
Nominal Operating Cell Temperature (NOCT) 42 ± 3 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.308 % / °C
Temperature Coefficient of Voc -0.243 % / °C
Temperature Coefficient of Isc +0.047 % / °C
Module Dimensions (H × W × D) 1762 × 983 × 35 mm
Weight 19.5 kg
Front Glass 3.2 mm high transmittance tempered reinforced glass
Backsheet Anti aging backsheet film
Frame Anodized aluminum alloy frame
Junction Box Protection Class IP67 rated junction box
Output Cables 4.0 mm² PV cable
Connector Type MC4 compatible connectors

Certifications & Compliance

Certifications: CE compliant; IEC 61215-1, IEC 61215-1-1, IEC 61215-2; IEC 61730-1, IEC 61730-2; application class A; Safety Class II; UL 1703.
Inverter Compatibility: Designed for mainstream 1000 V DC grid tie and off grid inverters using standard MC4 inputs. Always verify string sizing and voltage windows with the selected inverter datasheet.
Environmental: PID free module design with resistance to sand and dust abrasion, plus protection against salt mist and ammonia corrosion. Rated for 3800 Pa wind load, 5400 Pa snow load, and 35 mm hail at 97 km/h.
Warranty: 15 year manufacturing warranty on product materials and workmanship. Performance warranty of 12 years at 90 % of nominal power and 25 years at 80 % of nominal power, corresponding to an estimated 0.8 % annual degradation rate.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing for Sunceco SEM 330 Diamond panels

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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

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