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The Static Transfer Switch (STS) is a cabinet-based, cutting-edge switching solution designed for commercial and industrial energy storage systems. Fully compatible with GoodWe ESA 125 kW/261 kWh, it delivers UPS-level on- and off-grid switching in under 20 ms. The STS provides precise control of inverters, enabling seamless transitions between grid-tied and off-grid modes so that, in the event of a grid outage, critical loads are supplied continuously by solar power or batteries and smoothly reconnected to the grid once power is restored. As a versatile cabinet solution, it also supports generator integration and large inductive loads such as heat pumps and motors, ensuring a reliable, flexible and efficient foundation for microgrid energy management.
STS 500kW paired with ESA 125kW/261kWh enables UPS-level On/off-grid switching under 20 ms
Built-in bypass switch to ensure system reliability
Compatible with ESA 125kW/261kWh and on-grid inverters for easy microgrid setup
Built-in branch switches with no additional distribution cabinet required
Outdoor-ready for stable operation across wide temperature conditions
OVERVIEW
Model
GW500K-STS-PCS-G10
Nominal Voltage (V)
220 / 380, 230 / 400, 3L / N / PE
Voltage Range (V)
340 ~ 440
Max. Apparent Power with Grid (kVA)
630
Ingress Protection Rating
IP54
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