EcoFlow PowerBox (Three-Phase)

Take Control of Your Power Supply

Take Control, Stay Powered.

Never lose power when it matters most. The EcoFlow PowerBox (Three-Phase) is a manual transfer switch designed for three-phase PowerOcean solar battery storage systems, enabling whole-home power backup and continuous power supply.

EcoFlow PowerOcean Plus (Three-Phase)

EcoFlow PowerOcean (Three-Phase)

Effortless Home Power Continuity

EcoFlow PowerBox simplifies whole-home power backup and ensures uninterrupted power during system installation or rare inverter failures, delivering a smooth user experience.

Whole-Home Power Backup

EcoFlow PowerBox makes whole-home power backup easier than ever. It supports a dedicated whole-home backup wiring method for EcoFlow PowerOcean (Three-Phase) to keep your household powered during outages.

Uninterrupted Power Supply

Your Power, Your Control.

EcoFlow PowerBox is compatible with both EcoFlow PowerOcean (Three-Phase) and PowerOcean Plus (Three-Phase). See how to manually make the switch in different usage scenarios.

With EcoFlow PowerOcean (Three-Phase)

On-Grid Operating Condition

Under on-grid operating condition, the backup load will be powered by the grid and the inverter.

Off-Grid Operating Condition

Under off-grid operating condition, flip it upwards to enable the Backup output, the backup load will be powered by the inverter.

With EcoFlow PowerOcean Plus (Three-Phase)

Normal Operating Condition

Under normal operating condition, flip it upwards to enable the Backup output, the backup load will be powered by the inverter and the grid (grid-connected only).

Fault Condition

In case of an inverter failure, the inverter can be bypassed manually, allowing the backup load to be directly powered by the grid. Please follow the instructions below:

1. Turn off AC breaker.

2. Flip it downwards to enable the Grid output.

EcoFlow PowerBox with EcoFlow PowerOcean Plus Three-Phase Fault Condition