Solis 75kW Commercial Three-Phase Solar String Inverter – S5-GC75K-US-APST

The Solis S5-GC75K-US-APST is a high-performance 75kW three-phase grid-tied string inverter designed for commercial, industrial, agricultural, and distributed generation solar projects throughout North America. Engineered specifically for 480VAC commercial applications, this inverter combines exceptional conversion efficiency, advanced safety technologies, and intelligent monitoring capabilities into a robust and reliable platform.

Featuring eight independent MPPT channels, support for modern high-current photovoltaic modules, integrated AFCI protection, and an integrated APS module-level rapid shutdown transmitter, the S5-GC75K-US-APST maximizes energy harvest while simplifying NEC rapid shutdown compliance requirements. The inverter also includes advanced string monitoring, smart I-V curve scanning, integrated PID recovery, and SolisCloud monitoring capabilities for long-term system optimization and reliability.

Key Technology

• 75kW Commercial Three-Phase Power Conversion
  Optimized for large commercial rooftops, agricultural facilities, and industrial solar installations.

• Eight Independent MPPT Inputs
  Supports multiple roof orientations and complex system layouts while maximizing energy production.

• 16A String Current Capability
  Compatible with modern high-power and high-current photovoltaic modules.

• 98.7% Maximum Efficiency
  Industry-leading efficiency improves project economics and long-term energy production.

• Integrated APS Rapid Shutdown Transmitter
  Provides built-in module-level rapid shutdown communication for simplified NEC 690.12 compliance.

• Integrated AFCI Protection
  Arc fault circuit interruption proactively reduces fire risk and enhances system safety.

• Nighttime PID Recovery Function
  Reduces potential induced degradation and improves long-term module performance.

• Advanced Monitoring Platform
  Supports SolisCloud remote monitoring, firmware upgrades, diagnostics, and performance analysis.

Best Uses

• Commercial Rooftop Solar Systems
  Ideal for office buildings, warehouses, schools, and retail facilities.
• Industrial Solar Projects
  Supports manufacturing plants and industrial energy offset applications.
• Agricultural Solar Installations
  Excellent for farms, irrigation systems, and agricultural operations.
• Large Distributed Generation Systems
  Provides reliable energy conversion for large-scale behind-the-meter installations.
• Rapid Shutdown Compliant Systems
  Integrated APS transmitter simplifies NEC compliance while reducing hardware requirements.

Warranty

• Standard Warranty: 10 Years
• Maximum Efficiency: 98.7%
• CEC Efficiency: 98.3%
• Ingress Protection: NEMA 4X

Product Specifications

Commercial Solar Performance Designed for Large-Scale Projects

The Solis S5-GC75K-US-APST combines eight MPPT channels, integrated rapid shutdown capability, intelligent diagnostics, advanced safety features, and commercial-grade reliability into a powerful platform optimized for North American commercial and industrial solar projects.

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.