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Attachments
Specification
Length | 83.9in |
Width | 41.3in |
Rated Power Output | 440 W |
Voltage (VOC) | 48.7V |
Maximum String Voltage | 1500V |
Number of cells | 144 |
Cell Type | Monocrystalline |
Rated Efficiency | 19.7% |
Connector Type | MC4 or T4 series |
Frame Color | silver |
Dimensions LxWxH | 83.9 x 41.3 x 1.2 in |
Pallet Qty | 33 |
Manufacturer | Canadian Solar |
Manufacturer Part # | CS3W-440MB-AG |
Operating Temperatures | −40°F to +185°F |
Scope of Application |
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Use |
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Warranty | 12/ 30-year see warranty details |
About product
CS3W MB AG is a model that uses a number of technologies to bring durability and performance to the next level. This panel takes full advantage of the Passivated Emitter Rear Contact (PERC) technology that allows it to capture up to 12% more energy. All thanks to a reflective layer on the back. This design maximizes the number of photons absorbed by solar cells.
The use of half-cut cell technology is an additional perk. The solar cells of CS3W MB AG are half the size of those found in standard panels. Major advantages include reduced power consumption, extended life and enhanced efficiency in low-light conditions. As a result, the panel achieves an impressive efficiency of 19.7%. And while conventional panels use only one side to absorb photons, bifacial modules employ both sides at the same time. Thanks to the technology, this model can be up to 30% more efficient. Canadian Solar provides a 12-year product warranty. Stable power output is also guaranteed — performance warranty will protect you during 30 years.
CS3W MB AG guarantees the highest power output. PERC technology and potent anti reflective coating result in 19.7% module efficiency. This is significantly higher than average, which will result in substantial extra savings over the years of operation.
The heat is less of a threat with this module: with one of the lowest temperature coefficients in the industry, CS3W MB AG loses just 0.34% of efficiency for every 1.8°F above 77°F.
Canadian Solar stringent production requirements include various tests to guarantee high quality. The facilities are highly automated, allowing the manufacturer to maintain high standards while keeping warranty claims to a minimum.
These panels will lose no more than 2% of their power output in the first year of service. From the 2nd year to the 30th year, the average annual power decline will be no more than 0.45%. The module retains over 84.95% of its original output after 30 years. Guaranteed by Canadian Solar.
CS3W MB AG is resistant to PID, salt, acid and ammonia. It can also withstand up to 5400 Pa mechanical load on the front and 3600 Pa on the back. Such robustness is mainly due to the 1.2" thick anodized aluminum frame and a layer of protective glass.
83.9" x 41.3" x 1.2"
62.6 lb
Reviews & Questions
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Canadian Solar is one of the most recognized names in the global solar panel market. Known for its impressive mix of affordability, efficiency, and long-term reliability, Canadian Solar panels have earned their place as one of the most popular choices for homeowners and businesses alike. From 400W to 550W models, these panels offer solid power outputs and are backed by excellent warranties.
Founded in 2001, Canadian Solar Inc. (NASDAQ: CSIQ) has grown to become one of the world's largest solar technology companies with over 87 GW of solar modules shipped globally. With manufacturing facilities across Asia and a strong presence in North America, the company has established itself as a leading Tier 1 manufacturer serving residential, commercial, and utility-scale markets in over 160 countries worldwide.
🏆 Tier 1 Manufacturer
Leading global solar manufacturer with over 25 GW production capacity across multiple facilities, exporting to 160+ countries with proven financial stability and bankability
⚡ Advanced Technology
Half-cell PERC technology with up to 21.6% efficiency and excellent low-light performance with <0.5% annual power degradation ensuring long-term reliability
💰 Cost Advantage
Industry-leading price-to-performance ratio at $0.45-$0.85/W with excellent value proposition and competitive system pricing at $2.50-$3.50/W installed
🛡️ Superior Warranty
25-year linear power warranty + 25-year product warranty exceeding industry standards with comprehensive coverage and global support network
"Canadian Solar's 400W panel gives us exceptional value at $0.58/W—customers love the Tier 1 quality and proven reliability, and we appreciate the advanced PERC technology and robust build quality."
— Terry Shin, Mountain West Solar (UT, 2025)
Series | Power | Efficiency | Warranty | Ideal use-case |
---|---|---|---|---|
400W | 400W | 21.1% | 25 years | Space-limited roofs |
450W | 450W | 21.6% | 25 years | Larger homes, businesses |
550W | 550W | 21.0% | 25 years | Commercial & large homes |
700W | 700W | 20.8% | 25 years | Commercial & industrial |
Feature | Certification/Standard | Benefit |
---|---|---|
PID-free design | TÜV Rheinland IEC 62804 | 1% annual degradation cap |
Safety & construction | IEC 61215/61730 (2023 ed.) | Global code compliance |
Quality system | ISO 9001/14001/45001 | Robust QA/HSE culture |
Bifacial energy modeling | NREL bifacial PV performance study | Predictable rear-side gain |
"We have a customer who saved 20% over competing brands by going with Canadian Solar 400W panels for their home system. The performance is exceptional, and the savings speak for themselves."
— John T., Solar Installations Inc.
Feature | Canadian Solar | CertainTeed Solar |
---|---|---|
Efficiency | Up to 21.6% | Up to 20.5% |
Price per Watt | $0.45 - $0.85 | $0.70 - $0.75 |
Warranty | 25 years | 25 years |
Made In | China/Canada/Vietnam | USA |
"After comparing several brands, I decided on Canadian Solar for my 8 kW residential system. The panels were easy to install, and I've seen a steady return on my energy savings over the past year."
— Mark J., Homeowner, Texas
"We installed Canadian Solar's 550W panels for a commercial warehouse. The energy output has been fantastic, and the warranty gives us peace of mind. Highly recommend them for large-scale systems."
— Sarah W., Business Owner, Florida
Yes, Canadian Solar is recognized as a Tier 1 manufacturer by Bloomberg New Energy Finance, indicating strong financial stability and proven bankability in the solar industry.
Canadian Solar panels are manufactured in China, Canada, and Vietnam, with stringent quality standards at each facility.
Canadian Solar offers a 25-year linear power warranty and a 25-year product warranty on their panels.
Yes, Canadian Solar panels are available throughout the USA and are eligible for domestic content incentives when installed with other U.S.-made components.
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