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Canadian Solar KuMax 345W Solar Panel - CS3U-345P

Canadian Solar CS3U-345P polycrystalline solar panel front view on white background

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SKU PES-SPS-SPL-0006

Canadian Solar KuMax 345W Solar Panel - CS3U-345P

$384.22 USD

$ $384.22 USD

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$384.22/per panel

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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

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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.

Canadian Solar KuMax 345W Solar Panel - CS3U-345P

The Canadian Solar CS3U-345P KuMax Solar Panel is ingeniously crafted to deliver reliable power with enhanced efficiency. Known for its low nominal module operating temperature and superior shading tolerance, this solar panel excels in maximizing energy capture even under less-than-ideal conditions. Targeted at providing substantial energy solutions, it comes equipped with a high PTC rating, ensuring consistent power generation that meets diverse energy demands effectively.

Product Features

Enhanced Power Output

The Canadian Solar CS3U-345P offers a substantial 345W power capacity, making it ideal for various residential and commercial applications. This feature ensures that the solar panel can generate a significant amount of electricity, thereby supporting your energy needs.

Low Power Loss Connection

The solar panel's innovative 5BB cell design minimizes power loss, ensuring that you receive the maximum energy output. This advanced cell connection optimizes energy flow, enhancing overall panel efficiency.

Low Temperature Coefficient

With a temperature coefficient of Pmax at -0.38% per C, this panel maintains a high efficiency even when temperatures rise, meaning it loses less power in hot conditions compared to conventional panels.

Robust Construction for Tough Conditions

Engineered to withstand heavy snow loads up to 5400 Pa and wind loads of 3600 Pa, this solar panel is built for durability and long-term performance, regardless of weather challenges.

Quality and Environmental Certifications

The panel is certified under various international standards, including ISO 9001 for quality management, and ISO 14001, highlighting its commitment to environmental responsibility.

How It Works

The Canadian Solar KuMax 345W Solar Panel utilizes advanced poly-crystalline technology to convert sunlight into electricity. With its high module efficiency and robust structural design, the panel seamlessly integrates into solar energy systems, providing a stable energy output.

Poly-crystalline Cell Technology

Employs poly-crystalline cells, known for their reliability and efficiency in converting sunlight into electricity, enhancing the panel's performance.

High-Quality Anodized Aluminium Frame

This durable frame supports the panel structure, ensuring stability and resistance to environmental wear and tear over its operational life.

Integrated Junction Box

Equipped with an IP68-rated junction box with three bypass diodes, which help in reducing power loss and protects against thermal issues, ensuring optimal power transfer.

Specifications

Nominal Max. Power (Pmax)	345 W
Operating Temperature	-40C ~ +85C
Module Efficiency	17.39%
Open Circuit Voltage (Voc)	46.1 V
Short Circuit Current (Isc)	9.44 A
Max. System Voltage	1500V (IEC/UL)
Dimensions	2000 x 992 x 35 mm
Weight	22.5 kg
Front Cover	3.2 mm tempered glass
Frame Material	Anodized aluminium alloy

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?

Canadian Solar KuMax 345W Solar Panel - CS3U-345P

Product Features

Enhanced Power Output

Low Power Loss Connection

Low Temperature Coefficient

Robust Construction for Tough Conditions

Engineered to withstand heavy snow loads up to 5400 Pa and wind loads of 3600 Pa, this solar panel is built for durability and long-term performance, regardless of weather challenges.

Quality and Environmental Certifications

The panel is certified under various international standards, including ISO 9001 for quality management, and ISO 14001, highlighting its commitment to environmental responsibility.

How It Works

Poly-crystalline Cell Technology

Employs poly-crystalline cells, known for their reliability and efficiency in converting sunlight into electricity, enhancing the panel's performance.

High-Quality Anodized Aluminium Frame

This durable frame supports the panel structure, ensuring stability and resistance to environmental wear and tear over its operational life.

Integrated Junction Box

Equipped with an IP68-rated junction box with three bypass diodes, which help in reducing power loss and protects against thermal issues, ensuring optimal power transfer.

Specifications

Nominal Max. Power (Pmax)	345 W
Operating Temperature	-40C ~ +85C
Module Efficiency	17.39%
Open Circuit Voltage (Voc)	46.1 V
Short Circuit Current (Isc)	9.44 A
Max. System Voltage	1500V (IEC/UL)
Dimensions	2000 x 992 x 35 mm
Weight	22.5 kg
Front Cover	3.2 mm tempered glass
Frame Material	Anodized aluminium alloy

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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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