{"product_id":"enphase-iq9s-3p-584w-microinverter-domestic-content-iq9s-3p-277-b-dom-us","title":"Enphase IQ9S-3P 584W Microinverter Domestic Content IQ9S-3P-277-B-DOM-US","description":"\u003cstyle\u003e\n.uss-product{font-size:16px;line-height:1.65;color:#252525}\n.uss-product h2,.uss-product h3{color:#020079;line-height:1.3;margin:26px 0 12px}\n.uss-product p{margin:12px 0}\n.uss-product ul{padding-left:23px;margin:10px 0 20px}\n.uss-product li{margin-bottom:8px}\n.uss-product .uss-callout{background:#f7f8fa;border-left:4px solid #0021f3;padding:16px 20px;margin:18px 0 24px}\n.uss-product .uss-table-wrap{overflow-x:auto;margin:18px 0 24px}\n.uss-product table{width:100%;border-collapse:collapse}\n.uss-product th,.uss-product td{border:1px solid #d9dde3;padding:11px 13px;text-align:left;vertical-align:top}\n.uss-product th{background:#020079;color:#fff}\n.uss-product td:first-child{font-weight:600}\n.uss-product .uss-faq{margin:20px 0 28px}\n.uss-product .uss-faq details{border:1px solid #d9dde3;border-radius:6px;margin-bottom:10px;background:#fff;overflow:hidden}\n.uss-product .uss-faq summary{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px 18px;font-weight:600;color:#020079;cursor:pointer;list-style:none;background:#f7f8fa}\n.uss-product .uss-faq summary::-webkit-details-marker{display:none}\n.uss-product .uss-faq summary::after{content:\"+\";font-size:23px;font-weight:400;line-height:1;color:#020079;flex-shrink:0}\n.uss-product .uss-faq details[open] summary::after{content:\"−\"}\n.uss-product .uss-faq details[open] summary{border-bottom:1px solid #d9dde3}\n.uss-product .uss-faq .uss-faq-answer{padding:4px 18px 14px}\n.uss-product .uss-faq .uss-faq-answer p{margin:12px 0 0}\n\u003c\/style\u003e\n\u003cdiv class=\"uss-product\"\u003e\n\u003ch2\u003eEnphase IQ9S-3P 548W 277V Commercial Microinverter – IQ9S-3P-277-B-DOM-US\u003c\/h2\u003e\n\u003cp\u003eThe Enphase IQ9S-3P Commercial Microinverter brings module-level power conversion, advanced grid support, and intelligent monitoring to commercial solar installations. Designed for three-phase electrical systems, this high-powered microinverter converts electricity from an individual solar panel into grid-compatible AC power while helping maximize energy harvest across the array.\u003c\/p\u003e\n\u003cp\u003eManufactured in the United States, this domestic-content version is designed to support commercial solar projects pursuing applicable domestic-content incentives. Its compact, fanless construction, plug-and-play connections, and integration with Enphase commercial monitoring technology help simplify installation and long-term system management.\u003c\/p\u003e\n\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Three-Phase Design:\u003c\/strong\u003e Engineered for commercial PV installations using compatible WYE electrical systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDomestic Content Version:\u003c\/strong\u003e Manufactured in the United States, with domestically manufactured electrical components and enclosure to support qualifying domestic-content projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule-Level Power Conversion:\u003c\/strong\u003e Converts DC electricity into AC power at each solar module, allowing individual panel-level energy harvesting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Powered Module Compatibility:\u003c\/strong\u003e Designed to pair with modern, high-output commercial solar panels within supported electrical limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Grid Support:\u003c\/strong\u003e Meets current grid-interconnection requirements, including IEEE 1547 and California Rule 21.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Monitoring:\u003c\/strong\u003e Integrates with the Enphase IQ Gateway Commercial Pro, Enphase App, and analysis software.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Installation:\u003c\/strong\u003e Uses Enphase AC connections and Staubli MC4 DC connectors for streamlined system assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Firmware Updates:\u003c\/strong\u003e Supports updates for changing utility grid requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutdoor-Rated Construction:\u003c\/strong\u003e Durable, corrosion-resistant enclosure designed for demanding commercial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFanless Cooling:\u003c\/strong\u003e Natural convection cooling eliminates the need for mechanical fans.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDesigned for Commercial Three-Phase Solar Systems\u003c\/h2\u003e\n\u003cp\u003eThe IQ9S Commercial Microinverter is engineered for commercial rooftop and other grid-connected PV installations. Unlike residential microinverters designed for conventional split-phase service, this model operates in a commercial WYE electrical configuration.\u003c\/p\u003e\n\u003cp\u003eIts module-level architecture provides distributed power conversion throughout the array. Each microinverter manages its connected solar panel independently, helping reduce the impact of module mismatch, shading, or differences in individual panel performance.\u003c\/p\u003e\n\u003cp\u003eThe system is designed to support commercial installations using compatible Enphase branch-circuit equipment, gateway hardware, and monitoring infrastructure.\u003c\/p\u003e\n\u003ch2\u003eDomestic Content for Commercial Solar Projects\u003c\/h2\u003e\n\u003cp\u003eThis version of the IQ9S Commercial Microinverter is manufactured in the United States. According to Enphase, its printed circuit board assembly, electrical parts, and enclosure are domestically manufactured to meet eligibility requirements for the federal investment tax credit domestic-content bonus adder.\u003c\/p\u003e\n\u003cp\u003eFor commercial developers, EPC contractors, and solar installers, selecting domestically manufactured components can help support project procurement strategies where domestic-content requirements are a priority.\u003c\/p\u003e\n\u003cp\u003eFinal eligibility for any tax incentive depends on the complete project, applicable regulations, documentation, and domestic-content calculations. The microinverter's manufacturing status alone does not establish eligibility for the entire installation.\u003c\/p\u003e\n\u003ch2\u003eAdvanced Grid Support and Smart Monitoring\u003c\/h2\u003e\n\u003cp\u003eThe IQ9S supports advanced grid-interconnection functions designed to meet modern utility requirements. Configurable grid profiles, power factor capabilities, and remote firmware updates help installers adapt systems to changing grid standards.\u003c\/p\u003e\n\u003cp\u003eWhen connected to the Enphase IQ Gateway Commercial Pro, the microinverter communicates through power line communication technology. Installers and system owners can access production data and system information through supported Enphase monitoring and analysis tools.\u003c\/p\u003e\n\u003cp\u003eThis connected architecture helps simplify commissioning, performance monitoring, and ongoing commercial solar system maintenance.\u003c\/p\u003e\n\u003ch2\u003eSystem Compatibility and Installation Requirements\u003c\/h2\u003e\n\u003cp\u003eThe IQ9S is intended for use as part of a properly designed Enphase commercial microinverter system.\u003c\/p\u003e\n\u003cp\u003eDepending on the installation, additional equipment may include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible commercial solar modules\u003c\/li\u003e\n\u003cli\u003eEnphase QD commercial AC cabling and connectors\u003c\/li\u003e\n\u003cli\u003eEnphase IQ Gateway Commercial Pro\u003c\/li\u003e\n\u003cli\u003eCompatible branch-circuit protection and AC distribution equipment\u003c\/li\u003e\n\u003cli\u003eAppropriate mounting and grounding equipment\u003c\/li\u003e\n\u003cli\u003eRequired disconnects and other electrical balance-of-system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eModule selection must account for operating voltage, open-circuit voltage, current limits, and expected environmental conditions. Commercial branch-circuit design and utility interconnection must follow Enphase installation instructions and applicable electrical requirements.\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cdiv class=\"uss-table-wrap\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Continuous \/ Peak AC Output\u003c\/td\u003e\n\u003ctd\u003e548VA \/ 548VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Grid Voltage \/ Frequency\u003c\/td\u003e\n\u003ctd\u003e277V L-N \/ 60Hz (480V three-phase WYE system)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon PV Module Pairing Range\u003c\/td\u003e\n\u003ctd\u003e500–770W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating \/ MPPT Voltage\u003c\/td\u003e\n\u003ctd\u003e18–65V \/ 32–55V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum DC Input Voltage\u003c\/td\u003e\n\u003ctd\u003e70V (65V maximum under specified higher-temperature conditions)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum DC Continuous \/ Short-Circuit Current\u003c\/td\u003e\n\u003ctd\u003e18A \/ 24A module Isc; 30A maximum short-circuit input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Continuous AC Output Current\u003c\/td\u003e\n\u003ctd\u003e1.98A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCEC Weighted Efficiency\u003c\/td\u003e\n\u003ctd\u003e97.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.4 × 7.76 × 1.27 in \/ 2.65 lb (1.2 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure \/ Warranty\u003c\/td\u003e\n\u003ctd\u003eNEMA Type 6, outdoor \/ Limited warranty up to 25 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"uss-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Enphase IQ9S-3P a commercial or residential microinverter?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eThe IQ9S-3P is a commercial microinverter designed for compatible three-phase WYE electrical systems. It is not intended as a direct replacement for conventional residential split-phase microinverters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this microinverter made in the United States?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eYes. Enphase identifies the IQ9S-3P domestic-content version as manufactured in the United States, including its printed circuit board assembly, electrical parts, and enclosure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this model qualify for domestic-content tax incentives?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eEnphase states that this domestic-content version is manufactured to meet eligibility requirements for the federal ITC domestic-content bonus adder. However, eligibility depends on the entire solar project and applicable tax rules. Project developers should verify the complete system's compliance and documentation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat size solar panels can be paired with the IQ9S?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eThe IQ9S is designed for high-powered commercial solar modules. Panel selection must account for DC voltage, current, and other electrical requirements, not just nameplate wattage. Enphase recommends checking its module compatibility calculator for the intended panel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the IQ9S work with a 208V three-phase electrical system?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eThis specific IQ9S model is designed for 277V line-to-neutral connections in compatible 480V WYE systems. It is not intended for direct connection to a standard 208V three-phase service without an appropriately engineered transformer or other supported system configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eDoes this microinverter require an Enphase gateway?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eThe IQ9S integrates with the Enphase IQ Gateway Commercial Pro for communication, monitoring, and supported system management functions. The gateway is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003eHow many IQ9S microinverters can be installed on one branch circuit?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eEnphase specifies a maximum of 24 IQ9S microinverters per 20A three-phase branch circuit in the applicable 480V WYE configuration. Final circuit design must follow Enphase instructions and applicable electrical codes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the IQ9S provide battery backup during a grid outage?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eThe IQ9S is a grid-connected commercial microinverter and does not independently provide battery backup or off-grid operation. Backup functionality would require a separately engineered, compatible system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre AC cables and the IQ Gateway included?\u003c\/summary\u003e\n\u003cdiv class=\"uss-faq-answer\"\u003e\n\u003cp\u003eNo. This listing is for the IQ9S commercial microinverter only. Enphase commercial AC cables, the IQ Gateway Commercial Pro, and other installation accessories are sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Enphase","offers":[{"title":"Default Title","offer_id":53485726728490,"sku":"USSSP202-1431","price":193.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/3408\/1340\/files\/EnphaseIQ9SCommercialMicroinverter.jpg?v=1794579122","url":"https:\/\/ussolarsupplier.com\/products\/enphase-iq9s-3p-584w-microinverter-domestic-content-iq9s-3p-277-b-dom-us","provider":"US Solar Supplier","version":"1.0","type":"link"}