Topco Solar 435
Topco Solar 435
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Topco Solar 435

Topco Solar 435

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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.

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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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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.

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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.

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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.

Topco Solar 435 435W Monocrystalline Monofacial Solar Panel

Model 435 | Monocrystalline PERC | 320 Full Cells | Monofacial | 1500V System Voltage

435 Wp
Max Power Output
20.9%
Module Efficiency
320
N-Type TOPCon

Product Overview

The Topco Solar 435 435W Monocrystalline Solar Panel delivers high power density in a compact footprint. This monofacial module is designed for residential and commercial arrays where reliable output and long service life are essential. With a maximum power rating of 435 watts and panel efficiency up to 20.9 percent, strong performance is maintained even in constrained roof spaces. The power range of 420 to 445 watts allows flexible array design across diverse projects. A robust 15 year product warranty and 25 year power warranty support long term energy production.

Engineered with monocrystalline PERC cells, this panel is optimized for modern string and central inverters rated up to 1500 volts. The operational temperature range from minus 40 to plus 85 degrees Celsius supports installation in challenging climates. A durable anodized aluminum frame, tempered solar glass, and IP68 rated junction box help resist moisture, dust, and mechanical stress. Installers can deploy this module for rooftop, ground mount, and small commercial systems while maintaining a clean visual appearance. Buyers receive dependable performance backed by a trusted United States based seller.

Key Benefits

High power density for tight roof layouts: The 435 watt rating and efficiency up to 21.4 percent allow more kilowatts on limited roof space. This helps maximize system capacity without expanding array footprint.

Stable long term performance: A total degradation rate of 0.61 percent per year supports 84.8 percent output at year twenty five. Energy yield stays predictable across the full warranty period.

Durable construction for harsh climates: Tempered 3.2 millimeter glass and anodized aluminum framing protect cells against wind, snow, and impact. The IP68 junction box improves resistance to dust and water ingress.

Flexible system design range: A 1500 volt maximum system voltage and 25 amp series fuse rating support long strings. Designers can reduce balance of system costs and simplify wiring layouts.

Trusted seller and straightforward logistics: This module is offered by Topco Solar Inc. in the United States. Local support helps streamline procurement, after sales service, and project scheduling.

How It Works

This monocrystalline solar panel converts sunlight into usable direct current electricity through high efficiency PERC cells. When light strikes the cell surface, an electric field is created and electrons begin to flow through the internal circuit. The generated current travels through the panel busbars, into the junction box, and out through the factory fitted cables. An external inverter later changes the direct current into alternating current electricity for household or commercial loads. System monitoring then tracks the energy output over time.

The panel is designed to operate safely within a wide temperature window while limiting power losses. Temperature coefficients for power, voltage, and current define how performance shifts during hot or cold days. These values are used by designers to predict energy production in real climate conditions. Over the lifetime of the panel, degradation is controlled by the cell design and encapsulation materials. The long term power warranty ensures defined performance levels after decades of operation.

Solar energy capture and conversion: Monocrystalline cells absorb incoming sunlight across the glass surface and generate electron movement. The rated maximum power point of 435 watts is reached under standard test conditions with optimized irradiance and temperature. During normal operation, the panel works near its voltage at maximum power of 36.2 volts and current of 12.02 amps. An inverter performs maximum power point tracking to keep the panel operating at this sweet spot.

Current flow and system integration: The generated current leaves the panel through the IP68 junction box and 4 square millimeter cables. MC4 compatible connectors allow quick and secure string connections on site. Multiple modules are wired in series and parallel to reach the planned array voltage and current. The 1500 volt rating and 25 amp series fuse limit guide electricians when designing safe string configurations.

Thermal management and reliability: The nominal operating cell temperature of 42.3 degrees Celsius plus or minus two degrees indicates typical conditions in the field. As temperature rises, the power output slightly decreases according to the minus 0.34 percent per degree coefficient. Voltage also declines with heat, while current increases marginally with the positive coefficient for short circuit current. These predictable shifts allow accurate modeling of yearly energy yield for both residential and commercial installations.

Technical Specifications

Brand Topco Solar Inc.
Model Number 435
Cell Technology Monocrystalline PERC
Cell Count and Type 320 monocrystalline cells
Power Range 420 to 445 Wp
Maximum Power (Pmax) STC 435 Wp
Voltage at Maximum Power (Vmpp) STC 36.2 V
Current at Maximum Power (Impp) STC 12.02 A
Open Circuit Voltage (Voc) STC 43.6 V
Short Circuit Current (Isc) STC 12.79 A
Alternate Pmax Rating 328 Wp with Vmpp 34.5 V and Impp 9.49 A
Alternate Voc and Isc Voc 41.6 V, Isc 10.32 A
Panel Efficiency Range 20.2 to 21.4 percent
Nominal Operating Cell Temperature (NOCT) 42.3 ± 2 °C
Operating Temperature Range -40 °C to +85 °C
Temperature Coefficient of Pmax -0.34 percent per °C
Temperature Coefficient of Voc -0.27 percent per °C
Temperature Coefficient of Isc 0.04 percent per °C
Maximum System Voltage 1500 V
Series Fuse Rating 25 A
Module Dimensions (H x W x D) 1899 x 1096 x 30 mm
Weight 21.8 kg
Glass Type and Thickness 3.2 mm tempered solar glass
Frame Type Anodized aluminium frame
Junction Box Protection Class IP68 rated junction box
Junction Box Diodes 2 bypass diodes
Cable Cross Section 4 mm²
Module Type Monofacial crystalline silicon panel

Certifications & Compliance

Certifications: Standard crystalline silicon module certifications typically apply, including IEC and UL listings where required by local codes. Please confirm the exact certificate set with Topco Solar Inc. before final design approval.
Inverter Compatibility: Compatible with most modern string and central inverters rated up to 1500 Vdc. Suitable for residential, commercial, and small utility projects using MPPT based inverter technology.
Environmental: Designed for outdoor installation with IP68 junction box and robust framing. Operational from -40 °C to +85 °C in diverse climate zones when installed to manufacturer guidelines.
Warranty: 15 year product workmanship warranty and 25 year power warranty with 84.8 percent rated output at the end of the power term. Total degradation rate is limited to approximately 0.61 percent per year under normal operating conditions.

Documentation

Download manufacturer's PDF from the product resources section or request it from Topco Solar Inc.

● Available | Contact us for lead time and project specific 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.

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

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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