Enphase IQ9N 427W MC4 DC Bulkhead Single Phase Made in USA Microinverter IQ9N-A-DOM-US

The Enphase IQ9N-A-DOM-US is a high-powered, smart grid-ready microinverter designed to pair with the latest generation of high-output solar modules.

The domestic content version is designed to support projects pursuing Domestic Content Bonus Credit eligibility when used in accordance with applicable IRS guidelines and approved project requirements. 

Featuring 427VA continuous output power at 240V, peak efficiency of 97.8%, and compatibility with PV modules ranging from 340W to 580W, the IQ9N microinverter is engineered to maximize energy production while providing module-level monitoring and optimization. Its compact, lightweight design incorporates integrated Stäubli MC4 connectors for fast installation and seamless integration into the Enphase Energy System.

Domestic Content Information

• Domestic Content Version: IQ9N-A-DOM-US
• Designed for projects pursuing Domestic Content Bonus Credit eligibility.
• This item includes domestic content and, if used in accordance with provisions established by the IRS, may qualify the taxpayer for a Domestic Content Bonus Credit.
• Eligibility requirements and project qualification are determined by applicable federal guidance and project-specific circumstances.

Key Technology

• 427VA Continuous Output Power
  Designed to support the latest high-output PV modules.

• Module Compatibility up to 580W
  Optimized for modern solar modules ranging from 340W to 580W.

• 97.8% Peak Efficiency
  Industry-leading conversion efficiency maximizes energy harvest.

• 97.5% CEC Weighted Efficiency
  Provides excellent real-world operating performance. 

• Dual MPPT Optimization
  MPPT operating range of 28V–45V supports high-performance module operation.

• Rapid Shutdown Compliant
  Complies with NEC 2014, 2017, 2020, and 2023 rapid shutdown requirements.

• Burst Mode Technology
  Patented technology improves energy production under varying operating conditions. 

• Integrated Stäubli MC4 Connectors
  Simplifies installation while improving reliability and compatibility.

• Smart Grid Ready
  Supports advanced grid-interactive functionality and IEEE 1547 compliance.

Best Uses

• Residential Solar Installations
  Ideal for homeowners seeking maximum module-level performance and reliability.

• Domestic Content Projects
  Suitable for projects targeting Domestic Content Bonus Credit requirements.

• High-Power PV Modules
  Optimized for today's larger and higher-output solar panels.

• Enphase Energy Systems
  Integrates seamlessly with IQ Gateway, IQ Battery, IQ System Controller, and IQ Combiner products. 

Warranty

• Warranty: Up to 25 Years when installed with an internet-connected IQ Gateway.

Product Specifications

About Enphase Energy

Enphase Energy is a global leader in microinverter-based solar and energy management technology. The company's IQ platform integrates solar production, energy storage, monitoring, EV charging, and backup power solutions into a comprehensive home energy ecosystem trusted by homeowners and installers worldwide.

Next-Generation Performance for High-Power Solar Modules

The Enphase IQ9N-A-DOM-US delivers advanced grid support, high efficiency, domestic content eligibility, and industry-leading reliability in a compact microinverter platform engineered for today's most powerful solar modules. 

Why Buy From US Solar Supplier

US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.

Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.

Need Assistance?

Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.