Ensure uninterrupted operation for large-scale commercial facilities. The GoodWe GW125K-STS-G10 is a high-capacity 125A Static Transfer Switch engineered specifically to work alongside GoodWe high-power commercial hybrid inverters (such as the ET 100kW series).

Designed to safeguard critical commercial loads during grid power loss, this unit automatically switches to backup power in under 10 milliseconds. Its robust high-voltage architecture, seamless RS485 communication, and high continuous current handling ensure seamless power continuity for industrial machinery, commercial HVAC systems, datacenter servers, and critical facility infrastructure.

Key Features:
• Rapid UPS-Level Transfer: Ultra-fast switching under 10ms minimizes interruption during grid failures.
• High Power Transfer Capacity: Built to handle up to 125A continuous AC current for large-scale commercial applications.
• Optimized Inverter Synergy: Direct RS485 communication integration with GoodWe commercial hybrid inverters for smart automatic switching.
• Integrated Generator / Auxiliary Control: Supports smart control relays for backup generator integration during extended power outages.
• Fanless Natural Cooling: Maintenance-free cooling design ensures silent operation and long-term hardware reliability.
• Heavy-Duty IP66 Enclosure: Superior dust and high-pressure water ingress protection for harsh indoor and outdoor commercial environments.

Technical Specifications:
• Model: GW125K-STS-G10
• System Type: Three-Phase Commercial STS Box
• Nominal Grid Voltage: 380 V / 400 V / 415 V (3L / N / PE or 3L / PE)
• Max. Continuous Current: 125 A
• Transfer Time: < 10 ms
• Communication Port: RS485
• Protection Rating: IP66
• Cooling Method: Natural Convection