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Model 440 | Mono PERC | 320 Cells Monocrystalline | Monofacial | 1500V System Voltage
The Topco Solar 440 monocrystalline 440W solar panel is designed for homeowners and businesses seeking reliable power density. With a maximum output of 440 watts and efficiency up to 21.1 percent, this module delivers strong performance on limited roof space. The advanced Mono PERC cell design allows more sunlight to be converted into usable electricity across a wide power range from 420 to 445 watts. Stable output is provided through a 15 year product warranty and 25 year power warranty with an expected 84.8 percent output at the end. Engineered for durability, the panel operates between minus 40 and 85 degrees Celsius and suits demanding climates. Robust 3.2 millimeter tempered glass, an anodized aluminium frame, and IP68 junction box protection support long term energy production. At 21.8 kilograms and 1899 by 1096 millimeters, the module balances high power with a manageable footprint. This panel is supplied by Topco Solar Inc. in the United States and works well for grid tied or hybrid systems.
High power density for tight roofs: A rated output up to 440 watts with efficiency up to 21.4 percent allows more energy from fewer modules, which is ideal where roof or ground space is limited.
Reliable long term performance: The 15 year product warranty and 25 year power warranty help ensure dependable generation, with power expected to remain at 84.8 percent of initial output by the end of the term.
Durable construction for harsh environments: Tempered glass, an anodized aluminium frame, and an IP68 junction box support resistance to moisture, dust, and mechanical stress in challenging weather conditions.
Stable performance in real world temperatures: A temperature coefficient of power at minus 0.34 percent per degree Celsius helps maintain generation on hot days, improving annual energy yields in warm climates.
Flexible system design options: With a system voltage rating of 1500 volts and a series fuse rating of 25 amps, the panel supports longer strings, which can reduce balance of system costs on larger projects.
Sunlight reaches the monocrystalline cells on the Topco Solar 440 module surface and is converted into direct current electricity. The Mono PERC architecture improves light capture by reflecting unused photons back into the cell, which increases energy conversion. Under standard test conditions, the panel can reach up to 440 watts with a voltage at maximum power of 36.3 volts and current at maximum power of 12.13 amps. That current then flows through robust 4 square millimeter cables and bypass diodes in the IP68 junction box, which are designed to support safe operation. Strings of modules can be connected in series up to the 1500 volt system rating, and the combined DC output is directed to an inverter or hybrid inverter. The inverter converts the DC power from the array into AC power for household loads or for export to the grid as allowed by the installation. Throughout its life, the panel operates within a wide temperature range while its power response follows the specified coefficients, ensuring predictable performance modeling.
Monocrystalline PERC energy conversion: Each monocrystalline cell uses high purity silicon to form a uniform crystal structure, which supports higher efficiency compared with many polycrystalline designs. The PERC rear surface layer enables improved light trapping, so more of the incoming solar energy becomes electrical output across the 420 to 445 watt range.
Optimized electrical output and protection: At maximum power, the panel delivers 36.3 volts and 12.13 amps under standard test conditions, which works well with modern string inverter inputs. Integrated diodes within the junction box help mitigate the impact of partial shading by allowing current to bypass shaded sections, reducing potential power loss and hot spots.
Mechanical design and thermal behavior: The 3.2 millimeter tempered glass and anodized aluminium frame support the module against wind, snow, and handling stress during installation. Thermal coefficients of power, voltage, and current describe how output changes with temperature, which allows accurate system simulations and helps installers size the array and inverter safely in different climates.
| Brand | Topco Solar Inc. |
| Model Number | 440 |
| Cell Technology | Monocrystalline Mono PERC |
| Cell Count and Type | 320 monocrystalline cells |
| Power Range | 420 Wp to 445 Wp |
| Maximum Power (Pmax) – High Configuration | 440 Wp |
| Voltage at Maximum Power (Vmpp) – High Configuration | 36.3 V |
| Current at Maximum Power (Impp) – High Configuration | 12.13 A |
| Open Circuit Voltage (Voc) – High Configuration | 43.7 V |
| Short Circuit Current (Isc) – High Configuration | 12.9 A |
| Maximum Power (Pmax) – Alternate Configuration | 331 Wp |
| Voltage at Maximum Power (Vmpp) – Alternate Configuration | 34.6 V |
| Current at Maximum Power (Impp) – Alternate Configuration | 9.57 A |
| Open Circuit Voltage (Voc) – Alternate Configuration | 41.7 V |
| Short Circuit Current (Isc) – Alternate Configuration | 10.41 A |
| Module Efficiency Range | 20.2% to 21.4% (typical 21.1%) |
| Nominal Operating Cell Temperature | 42.3 ± 2 °C |
| Operating Temperature Range | -40 °C to 85 °C |
| Temperature Coefficient of Pmax | -0.34 % / °C |
| Temperature Coefficient of Voc | -0.27 % / °C |
| Temperature Coefficient of Isc | +0.04 % / °C |
| Maximum System Voltage | 1500 V |
| Maximum Series Fuse Rating | 25 A |
| Total Degradation at Year 25 | 84.8% of initial power guaranteed |
| Annual Degradation Rate (Approximate) | 0.61% per year after initial period |
| Panel Dimensions (H × W × D) | 1899 × 1096 × 30 mm |
| Weight | 21.8 kg |
| Glass Type and Thickness | 3.2 mm tempered glass |
| Frame Material | Anodized aluminium frame |
| Junction Box Diodes | 2 bypass diodes integrated |
| Junction Box Protection Rating | IP68 rated junction box |
| Cable Cross Section | 4 mm² |
| Country of Seller | United States |
Certifications: Industry standard safety and performance certifications are typically supported for grid tied use. Please confirm exact certificate list with Topco Solar Inc. before final design and permitting.
Inverter Compatibility: Suitable for most modern string and hybrid inverters rated for 1500 volt DC systems when strings are designed within voltage and current limits.
Environmental: Designed for outdoor use with IP68 junction box and tempered glass, supporting resistance to dust, moisture, and normal climatic stresses when installed per guidelines.
Warranty: 15 year product warranty against defects in materials and workmanship, plus a 25 year power warranty targeting 84.8 percent of initial rated power by the end of the warranty period, subject to manufacturer terms.
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