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Solis 50kW Three-Phase Grid-Tied String Inverter – 208V, 4 MPPT, S6-GC50K-US-APST

Solis 50kW Three-Phase Grid-Tied String Inverter – 208V, 4 MPPT, S6-GC50K-US-APST

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Solis 50kW Three-Phase Grid-Tied String Inverter – 208V, 4 MPPT, S6-GC50K-US-APST

Solis 50kW Three-Phase Grid-Tied String Inverter – 208V, 4 MPPT, S6-GC50K-US-APST

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MPN No: S6-GC50K-US-APST
Regular price $5,886.50 -9% $5,327

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Regular price $5,886.50 -9% $5,327

Solis 50kW Three-Phase Grid-Tied String Inverter – 208V, 4 MPPT, S6-GC50K-US-APST

The Solis S6-GC50K-US-APST is a high-performance three-phase grid-tied string inverter engineered specifically for commercial rooftop, agricultural, industrial, and distributed generation solar projects across North America. Designed for 480VAC three-phase applications, the inverter combines exceptional conversion efficiency, advanced safety technologies, and intelligent monitoring capabilities into a compact and reliable platform.

Featuring four independent MPPT channels, support for modern high-current PV modules up to 20A per string, integrated AFCI protection, and an integrated APS module-level rapid shutdown transmitter, the S6-GC50K-US-APST maximizes energy harvest while simplifying NEC rapid shutdown compliance requirements. The inverter also includes integrated AC and DC disconnects, a Type 4X enclosure, and advanced SolisCloud monitoring capabilities for reliable long-term operation.


Key Technology

  • 50kW Three-Phase Commercial Power Conversion
    Designed for commercial and industrial 480V solar installations requiring high reliability and performance.

  • Four Independent MPPT Inputs
    Supports multiple array orientations and complex rooftop designs while maximizing energy production.

  • 20A String Current Capability
    Fully compatible with modern high-current bifacial and large-format photovoltaic modules.

  • 98.8% Maximum Efficiency
    Industry-leading efficiency helps maximize energy harvest and project economics.

  • 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.

  • Type 4X Environmental Protection
    Provides superior outdoor protection with C5 anti-corrosion performance for harsh environments.

  • Smart Monitoring Platform
    Supports SolisCloud remote monitoring, diagnostics, firmware upgrades, and system management.


Best Uses

  • Commercial Rooftop Solar Systems
    Ideal for warehouses, retail centers, schools, office buildings, and industrial facilities.
  • Agricultural Solar Installations
    Supports irrigation systems, agricultural processing facilities, and farm energy projects.
  • Distributed Generation Projects
    Excellent solution for large-scale behind-the-meter commercial solar systems.
  • Complex Rooftop Designs
    Multiple MPPT channels optimize production from varying roof orientations and shading conditions.
  • Rapid Shutdown Compliant Installations
    Integrated APS transmitter reduces installation complexity and additional hardware requirements.

Warranty

  • Standard Warranty: 10 Years
  • Maximum Efficiency: 98.8%
  • CEC Efficiency: 98.3%
  • Ingress Protection: Type 4X

Product Specifications

Specification Details
Manufacturer Solis
Model S6-GC50K-US-APST
Series S6-GC(25-60)K-US Series
Product Type Three-Phase Grid-Tied PV String Inverter
Rapid Shutdown Option APS MLRSD Transmitter Integrated
Rated AC Output Power 50,000W
Maximum Apparent Power 50,000VA
Maximum Output Power 50,000W
Grid Connection 3 Phase / PE, 480VAC
Rated Grid Frequency 60Hz
Maximum Output Current 60.1A
Power Factor >0.99 (Adjustable 0.8 Leading to 0.8 Lagging)
Total Harmonic Distortion (THDi) <3%
Maximum Efficiency 98.8%
CEC Efficiency 98.3%
Maximum DC Input Voltage 1000V DC
Rated DC Voltage 720V DC
Startup Voltage 180V DC
MPPT Voltage Range 180V - 1000V DC
Number of MPPT Inputs 4
Maximum Input Strings 8
Maximum Input Current 4 × 40A
Maximum Short Circuit Current 4 × 63A
Supported DC/AC Ratio >1.5
DC Reverse Polarity Protection Yes
Output Over Current Protection Yes
Surge Protection DC Type II / AC Type II
Anti-Islanding Protection Yes
Integrated AFCI Yes
String Monitoring Yes
I-V Curve Scanning Yes
Multi-Peak Scan Yes
Night PID Recovery Optional
Integrated DC Disconnect Yes
Integrated AC Disconnect Yes
Cooling Method Natural Cooling
Ingress Protection Type 4X
Corrosion Rating C5 Anti-Corrosion Level
Noise Emission ≤55 dB(A)
Operating Temperature -13°F to 140°F (-25°C to 60°C)
Relative Humidity 0% to 100%
Maximum Operating Altitude 13,120 ft (4,000 m)
Self Consumption (Night) <1W
Dimensions 30.9 × 21.6 × 12.6 in
Weight 108.7 lbs 
Topology Transformerless
DC Connections MC4 Connectors
AC Connections OT Terminal (4 AWG to 3/0 AWG)
Display LCD Display
Communication Modbus RTU (SunSpec Compliant), RS485
Optional Communication WiFi, Cellular, Ethernet
Certifications UL1741SB, IEEE1547-2018, UL1699B, UL1998, FCC Part 15 Class B, California Rule 21, HECO Rule 14H, NEC 690.12-2020, CAN/CSA C22.2 No.107.1-1

 

About Solis:

Solis, a brand of Ginlong Technologies, is one of the world's largest photovoltaic inverter manufacturers specializing in residential, commercial, and utility-scale inverter solutions. Solis products are recognized globally for their reliability, advanced monitoring capabilities, and industry-leading efficiency.


Commercial Solar Performance Designed for North America

The Solis S6-GC50K-US-APST combines advanced commercial inverter technology, integrated rapid shutdown capability, exceptional efficiency, and intelligent monitoring into a powerful platform optimized for North American commercial 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.