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SunMaster 605

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

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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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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.

SunMaster SM12-580~605W 580–605W Monocrystalline PERC Solar Panel

Model SM12-580~605W(120) | PERC | 120 Half-Cell | Monocrystalline | 1500V System Voltage

605 Wp

Max Power Output

21.38%

Module Efficiency

120

Monocrystalline Half-Cell

Product Overview

The SunMaster 605 is a high-output monocrystalline PERC solar panel built for demanding energy projects. It combines strong efficiency, stable electrical performance, and a durable 120 half-cell design. The module is rated from 580 to 605 Wp, making it a practical choice for large residential, commercial, and utility-scale installations. Its 21.38% efficiency helps maximize energy production in limited roof or ground space. The panel is engineered for reliable operation in hot climates, low-light conditions, and harsh outdoor environments. With a robust frame, tempered glass, and IP68 junction box protection, it is designed for long-term field performance.

Key Benefits

High power output: The module delivers up to 605 Wp for stronger system generation.

Excellent efficiency: Up to 21.38% conversion efficiency supports better energy yield.

Half-cell architecture: The 120-cell layout improves performance and helps reduce resistive losses.

Temperature resilience: Low temperature coefficients support dependable output in hot conditions.

Built for durability: The tempered glass, anodized aluminum frame, and IP68 junction box strengthen long-term reliability.

How It Works

This solar panel converts sunlight into direct current electricity through monocrystalline PERC cells. The half-cell format helps improve current flow and supports more consistent output across the module. Multi-busbar construction and a refined cell layout assist performance under real-world operating conditions. The panel is also designed to manage heat effectively, which helps protect output when temperatures rise. In practical use, the module produces electricity at standard test conditions and continues operating across a wide temperature range. Its electrical design, mechanical strength, and weather protection work together for stable system integration.

PERC Cell Conversion: Sunlight is absorbed by monocrystalline PERC cells and converted into usable DC power. This architecture supports efficient energy capture under bright and variable conditions.

Half-Cell Power Flow: The 120 half-cell structure divides current paths to lower resistance losses. It also helps maintain better output stability across the panel surface.

Thermal Performance: The module is engineered for strong operation from -40°C to 85°C. Its low temperature coefficients help reduce performance loss in hot weather.

Technical Specifications

Brand	SunMaster
Model Number	SM12-580~605W(120)
Technology	PERC
Cell Type	Monocrystalline
Cell Number	120 (6 x 20) Half-Cell
Cell Size	210 × 105 mm
Maximum Power	580 W, 585 W, 590 W, 595 W, 600 W, 605 W
Power Range	580 ~ 605 Wp
Power Tolerance	-3% ~ +3%
Panel Efficiency	20.49% ~ 21.38%
Voltage at Maximum Power	33.9 V to 34.9 V
Current at Maximum Power	17.11 A to 17.34 A
Open Circuit Voltage	40.8 V to 41.8 V
Short Circuit Current	18.25 A to 18.50 A
Operating Temperature	-40°C to +85°C
NOCT	43±2°C
Temperature Coefficient of Pmax	-0.34%/°C
Temperature Coefficient of Voc	-0.26%/°C
Temperature Coefficient of Isc	0.05%/°C
Maximum System Voltage	1000 V DC / 1500 V DC
Maximum Series Fuse Rating	30 A
Dimensions	2172 x 1303 x 35 mm
Weight	31 kg
Front Glass	3.2 mm tempered glass with anti-reflection coating
Frame Type	Anodized Aluminium
Junction Box Protection	IP68
Connector Type	MC4
Cable Cross Section	4 mm²
Seller Name	Jinhua SunMasterCompany Limited
Country of Origin	China

Certifications & Compliance

Certifications: IEC 61215, IEC 61730, CE
Inverter Compatibility: Suitable for 1000V DC and 1500V DC solar systems
Environmental: ISO 14001:2015, ISO 45001:2018, salt mist resistance, ammonia resistance, hail resistance, PID resistance
Warranty: 15-year material and technology warranty, 30-year linear power output warranty

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

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?

SunMaster SM12-580~605W 580–605W Monocrystalline PERC Solar Panel

Model SM12-580~605W(120) | PERC | 120 Half-Cell | Monocrystalline | 1500V System Voltage

605 Wp

Max Power Output

21.38%

Module Efficiency

120

Monocrystalline Half-Cell

Product Overview

Key Benefits

High power output: The module delivers up to 605 Wp for stronger system generation.

Excellent efficiency: Up to 21.38% conversion efficiency supports better energy yield.

Half-cell architecture: The 120-cell layout improves performance and helps reduce resistive losses.

Temperature resilience: Low temperature coefficients support dependable output in hot conditions.

Built for durability: The tempered glass, anodized aluminum frame, and IP68 junction box strengthen long-term reliability.

How It Works

PERC Cell Conversion: Sunlight is absorbed by monocrystalline PERC cells and converted into usable DC power. This architecture supports efficient energy capture under bright and variable conditions.

Half-Cell Power Flow: The 120 half-cell structure divides current paths to lower resistance losses. It also helps maintain better output stability across the panel surface.

Thermal Performance: The module is engineered for strong operation from -40°C to 85°C. Its low temperature coefficients help reduce performance loss in hot weather.

Technical Specifications

Brand	SunMaster
Model Number	SM12-580~605W(120)
Technology	PERC
Cell Type	Monocrystalline
Cell Number	120 (6 x 20) Half-Cell
Cell Size	210 × 105 mm
Maximum Power	580 W, 585 W, 590 W, 595 W, 600 W, 605 W
Power Range	580 ~ 605 Wp
Power Tolerance	-3% ~ +3%
Panel Efficiency	20.49% ~ 21.38%
Voltage at Maximum Power	33.9 V to 34.9 V
Current at Maximum Power	17.11 A to 17.34 A
Open Circuit Voltage	40.8 V to 41.8 V
Short Circuit Current	18.25 A to 18.50 A
Operating Temperature	-40°C to +85°C
NOCT	43±2°C
Temperature Coefficient of Pmax	-0.34%/°C
Temperature Coefficient of Voc	-0.26%/°C
Temperature Coefficient of Isc	0.05%/°C
Maximum System Voltage	1000 V DC / 1500 V DC
Maximum Series Fuse Rating	30 A
Dimensions	2172 x 1303 x 35 mm
Weight	31 kg
Front Glass	3.2 mm tempered glass with anti-reflection coating
Frame Type	Anodized Aluminium
Junction Box Protection	IP68
Connector Type	MC4
Cable Cross Section	4 mm²
Seller Name	Jinhua SunMasterCompany Limited
Country of Origin	China

Certifications & Compliance

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.

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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