Risun 335
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Risun 335

Risun 335

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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.

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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.

Jiangxi Risun Risun 335 335W Polycrystalline Framed Solar Panel

Model 335 | Polycrystalline | 144 Half-Cell | Monofacial | 1500V System Voltage

335 Wp
Max Power Output
16.9%
Module Efficiency
144 Cells
Polycrystalline

Product Overview

The Jiangxi Risun Risun 335 335W polycrystalline solar panel delivers reliable energy production for homes and businesses. This high quality module uses 144 polycrystalline cells to provide a rated maximum power of 335 Wp with solid efficiency. With a module efficiency of 16.9%, it helps squeeze more generation from limited rooftop or ground space. The panel is engineered around a robust anodized aluminium frame and tempered glass front for long term durability. It operates safely up to 1500 V system voltage, making it suitable for modern high string count arrays. A 10 year product warranty and 25 year power warranty support long term performance expectations. Low annual degradation helps maintain at least 80% of the initial output after 25 years of operation. The Risun 335 panel offers a dependable mix of output, build quality, and value for grid tied and off grid projects. Its 22 kg weight and 2000x992x40 mm dimensions allow straightforward handling and mounting on standard structures. This polycrystalline solar panel is produced by Jiangxi Risun Solar Energy Co., Ltd in China for global installations. The power range of the series spans 325 to 345 Wp with panel efficiencies between 16.4% and 17.4%. Consistent electrical characteristics, including 38.61 V Vmpp and 8.68 A Impp, support efficient inverter matching. The panel is designed to run from -40°C to 85°C, which suits diverse climates and weather conditions. A carefully selected junction box, connectors, and 4 mm² cable help ensure safe and stable energy delivery.

Key Benefits

Balanced 335 Wp power class: The 335 Wp rating suits residential and commercial string designs effectively. It offers strong production while keeping module count manageable on each array.

Efficient use of roof space: Module efficiency up to 16.9% helps maximise energy from limited surfaces. Higher efficiency reduces required area for a given system size.

Long term performance assurance: The 10 year product warranty covers manufacturing quality over time. A 25 year power warranty with 80% minimum output supports bankable forecasts.

Durable construction: Tempered 3.2 mm glass and anodized aluminium frame improve mechanical strength. The IP67 junction box offers dependable protection against dust and water ingress.

Wide operating temperature range: The panel operates from -40°C to 85°C while maintaining safe performance. Stable temperature coefficients support predictable output across seasons.

Flexible system integration: Support for up to 1500 V system voltage enables longer series strings. This can reduce installation balance of system costs on larger projects.

How It Works

This polycrystalline solar panel converts sunlight into usable direct current electricity through its silicon cells. A total of 144 cells are wired together to create a balanced voltage and current output. When photons strike the polycrystalline cells, electrons are released and driven by the built in electric field. The resulting current flows through the internal busbars and out through the junction box cables. At standard test conditions the module delivers 335 Wp, with Vmpp of 38.61 V and Impp of 8.68 A. This output can be connected to a compatible solar inverter or charge controller in a larger system. The panel performs across a wide range of temperatures, guided by its defined temperature coefficients. Over time the power output reduces slowly, with total degradation capped at 20% after 25 years. Proper orientation, tilt, and string design help extract the best performance from each module.

Photovoltaic energy conversion: Polycrystalline silicon cells absorb sunlight and generate charge carriers. An internal electric field directs these charges to create a steady DC current. The panel efficiency of 16.9% reflects how much sunlight becomes usable electrical power. Consistent manufacturing helps keep performance stable from cell to cell across the module.

Module voltage and current management: The 144 cell layout is optimised to deliver about 38.61 V at maximum power. At that point the current reaches around 8.68 A to produce the rated 335 Wp. Voc of 45.98 V and Isc of 9.12 A define the open circuit and short circuit extremes. These electrical values are important when sizing inverters, fuses, and cable runs.

Thermal and environmental behavior: The module operates safely from -40°C up to 85°C ambient conditions. Temperature coefficients describe how power, voltage, and current shift as cells heat. Pmax decreases by about -0.416% per degree Celsius above the test point. The NOCT value of 45±2°C indicates expected cell temperature under real field conditions.

Technical Specifications

Module Type Polycrystalline framed solar panel
Model Number Risun 335
Nominal Power Range 325 ~ 345 Wp series range
Maximum Power (Pmax) 335 Wp at STC
Power Tolerance 0 ~ +1.5 % positive tolerance
Panel Efficiency 16.9% module efficiency (16.4 ~ 17.4% series)
Voltage at Maximum Power (Vmpp) 38.61 V
Current at Maximum Power (Impp) 8.68 A
Open Circuit Voltage (Voc) 45.98 V
Short Circuit Current (Isc) 9.12 A
Maximum System Voltage 1500 V DC
Series Fuse Rating 15 A maximum series fuse
Total Degradation Rate 0.8% annual, 80% power after 25 years
Nominal Operating Cell Temperature (NOCT) 45±2 °C nominal cell temperature
Operating Temperature Range -40 °C to +85 °C ambient range
Temperature Coefficient of Pmax -0.416 %/°C
Temperature Coefficient of Voc -0.309 %/°C
Temperature Coefficient of Isc +0.049 %/°C
Panel Dimensions (H x W x D) 2000 x 992 x 40 mm
Weight 22 kg per module
Cell Count and Type 144 polycrystalline cells
Front Glass 3.2 mm tempered glass front
Frame Material Anodized aluminium frame
Junction Box Protection IP67 rated junction box
Cable Cross Section 4 mm² solar cable
Seller and Brand Origin Jiangxi Risun Solar Energy Co., Ltd., China

Certifications & Compliance

Certifications: Designed to meet mainstream IEC safety and performance standards for crystalline PV modules.
Inverter Compatibility: Compatible with most modern string and central inverters rated for 1500 V DC systems.
Environmental: IP67 junction box and durable glass protect against dust, moisture, and harsh outdoor conditions.
Warranty: 10 year product warranty and 25 year power warranty with at least 80% rated output at year 25.

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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