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The APsystems QT2-480 is a native, three-phase quad microinverter delivering up to 1800VA of continuous AC output at 480V, allowing for direct connection to commercial 480V services with no step-down transformer required. A single unit connects four PV modules across two independent MPPTs and up to 11 units (44 modules) can share a single 30A branch circuit, dramatically reducing AC-side wiring and homerun count on large rooftops.

Module-level power electronics make the QT2 inherently compliant with NEC rapid shutdown requirements, and its 20A maximum input current handles high-output modules up to 670W+. Every module reports performance data 24/7 through the APssystems EMA platform via encrypted Zigbee. 

The QT2-480 is built for commercial and industrial facilities with 480V three-phase service like warehouses, manufacturing plants, distribution centers, agricultural operations, etc. It’s especially efficient for expansive flat-roof arrays, and its module-level architecture suits sites with mixed orientations, partial shading, or strict rapid shutdown enforcement. Compatible with both delta and wye grid configurations.

• Max Continuous Output Power: 1800VA @ 480V  
• PV Modules per Unit: 4 (2 independent MPPTs)
• Recommended Module Power: 315W–670W+  
• Max DC Input Current: 20A per input  
• MPPT Voltage Range: 30–45V  
• Max Units per 30A Branch: 11 (44 modules per branch)  
• AC Bus Cable: 10AWG, 5-wire  
• Peak / CEC Efficiency: 96.5% / 95.5%  
• Rapid Shutdown: Built-in, NEC 690.12 compliant — no external equipment required  
• Grid Compliance: UL 1741-SB, IEEE 1547, CA Rule 21  
• Enclosure: Type 6, natural convection (no fans)  
• Operating Temperature: -40°F to +149°F  
• Communication: Encrypted Zigbee to ECU (ECU-R or ECU-C required for monitoring)  
• Warranty: 25 years standard