Key Features & Benefits
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Maximum Energy Production: 99.5% peak efficiency minimizes power loss and maximizes energy yield.
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Mitigates Mismatch Losses: Overcomes performance issues caused by shading, soiling, and module variations.
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Enhanced Safety: Module-level voltage shutdown to 1Vdc when the inverter or grid is off.
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Simplified Installation: Streamlined cable management and single-bolt mounting with MC4 connectors.
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Advanced Monitoring: Enables module-level performance monitoring for quick issue identification.
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Bifacial Module Support: Compatible with bifacial PV modules for increased energy generation.
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Flexible System Design: Supports various string lengths and orientations for optimal roof utilization.
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Abnormal Connector Behavior Detection: Enhances system reliability and safety.
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Durable Design: IP68-rated enclosure for reliable performance in harsh environments (-40°C to +85°C).
Technology & Performance
The SolarEdge S440 Power Optimizer is a module-level DC-DC converter that constantly tracks the maximum power point (MPPT) of each module. This independent tracking maximizes energy harvest, especially in partially shaded conditions or with modules exhibiting performance variations.
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Module-Level MPPT: Maximizes energy production from each module.
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99.5% Peak Efficiency: Minimizes energy loss for optimal system performance.
Installation & Compatibility
Designed for seamless integration with SolarEdge residential inverters, the S440 simplifies installation and system design.
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Compatibility: Works with SolarEdge single-phase and three-phase inverters (230/400V and 277/480V grid systems).
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String Configuration: Supports 8 to 25 optimizers per string.
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Simplified Mounting: Compact MC4 connectors and single-bolt mounting for fast installation.
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Parallel Strings: Supports parallel strings with different lengths or orientations.
Safety Features
Safety is a top priority with the S440 Power Optimizer.
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Module-Level Voltage Shutdown: Automatically reduces module voltage to a safe 1Vdc during installation, maintenance, or emergencies.
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Abnormal Connector Behavior Detection: Identifies potential safety hazards and improves system reliability.
Ideal for Residential Solar Installations
The SolarEdge S440 Power Optimizer is the perfect solution for homeowners looking to maximize their solar investment. Its advanced features, simplified installation, and enhanced safety make it a top choice for residential solar systems.
Specifications
MPPT Voltage Range |
8 - 60 Vdc |
Max Output Current |
15 Adc |
Safety Output Voltage |
1 Vdc |
Dimensions (W × L × H) |
5.08 × 6.02 × 1.18 in |
Operating Temperature |
-40°C to +85°C |
Protection Rating |
IP68 / NEMA 6P |
Input/Output Connectors |
MC4 |
Max System Voltage |
1000 Vdc |
Why SolarEdge?
SolarEdge is a global leader in smart energy technology, renowned for its innovative approaches to power management. Founded in 2006 in Israel but headquarter in California, the company has been at the forefront of solar energy solutions for over 17 years. SolarEdge specializes in a wide range of products, including solar inverters, power optimizers, and a comprehensive suite of monitoring and smart energy management solutions.
One of the defining technologies of SolarEdge is its power optimizer, which maximizes energy output from each solar panel through constant tracking of maximum power points. This allows for increased energy yield and improved system operation.
SolarEdge products come with a warranty that demonstrates their commitment to quality and customer satisfaction. Typically, their inverters come with a standard warranty of 12 to 25 years, while power optimizers usually carry a 25-year warranty.
The company has also garnered numerous accolades for its contributions to the renewable energy sector. Some of their notable awards include:
Top Solar Brand by Bloomberg New Energy Finance
Solar Power World’s Top Solar Contractor
Intersolar Award Recipient for Renewable Energy Innovation
Why Buy From US Solar Supplier?

As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.
Need Assistance?
We’re here to help! If you have any questions or need more information before making your purchase, don’t hesitate to call us at 1-800-230-7004. Our knowledgeable and friendly team is ready to assist you with product details, installation advice, or the purchasing process.
Why Buy From Us?
Trusted Supplier: We work with Tier 1 manufacturers who stand behind their products.
Expert Support: Our team is here to guide you every step of the way.
Manufacturer-Backed Warranties: Enjoy peace of mind with the 25-year performance guarantee and 12-year product warranty directly from the manufacturer.
Easy and Secure Checkout: Your information is protected with top-notch security for a smooth, worry-free transaction.
Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!