EcoFlow FlowMaster Generator Rectifier — Connect Any Gas Generator to Your DELTA Pro Ultra X, No Soft Starters Needed The FlowMaster Generator Rectifier converts the AC output from virtually any portable gasoline generator rated up to 12kW into stable, high-quality DC power for seamless, continuous charging of the EcoFlow DELTA Pro Ultra X — delivering up to 12kW of sustained DC output without the need for soft starters or complex wiring. It also supports dual PV input, making it a dual-function switching box for both generator and solar charging. Download Manual ⚠ Compatibility. The FlowMaster Generator Rectifier is designed exclusively for use with the EcoFlow DELTA Pro Ultra X. It is not compatible with the DELTA Pro Ultra (standard), DELTA Pro 3, DELTA Pro, or any other EcoFlow power station. ⚠ Wall Mount Installation Required. This unit requires wall mounting with a hammer drill and electrical screwdriver. Switching between GEN and PV modes is manual. Ensure installation location is suitable for IP20-rated equipment (indoor or sheltered). Key Features 12kW Continuous DC Output — Sustains full 12kW output from compatible generators, enabling whole-home backup power without interruption No Soft Starter Required — Works with virtually all portable gasoline generators up to 12kW out of the box, eliminating costly add-ons Dual-Function: Generator + Solar — Handles both GEN input (120/240V AC) and PV input (80–500V DC) via separate ports; manual switch between modes Plug-and-Play Integration — Designed specifically for the DELTA Pro Ultra X; connects via the PV input port for safe, efficient DC charging Wide Operating Range — Rated for -22°F to 122°F (-30°C to 50°C) and altitudes up to 3000m for reliable performance in varied environments EcoFlow Authorized Accessory — Engineered and tested by EcoFlow for compatibility and safety with the DELTA Pro Ultra X system Specifications Specification Detail Model EF-SW-002 Compatible System EcoFlow DELTA Pro Ultra X only Generator Input (×1) 120/240V AC~60Hz, 30A MAX; supports most portable gasoline generators up to 12kW PV Input (×2) 80–500V DC / 15A MAX per port DC Output (under GEN input) 170V DC (at 120V AC input) / 340V DC (at 240V AC input); MAX 15A, 7200W, 2 outputs total DC Output (under PV input) 80–500V DC; MAX 15A, 10,000W, 2 outputs total Max Continuous DC Output 12kW (generator mode) Switching Method Manual (GEN / PV) Installation Method Wall mount IP Rating IP20 (indoor/sheltered installation only) Operating Temp -22°F to 122°F (-30°C to 50°C) Operating Altitude ≤3000m Soft Starter Required No — compatible with virtually all portable gasoline generators up to 12kW
