B10 series backpack water pump inverter Power range 0.75~2.2kW single phase 220V (on sale) 0.75~2.2kW three phase 220V (on sale) 4~11kW three phase 380V safe and Reliable Constant pressure water supply, intelligent protection Motor output short circuit protection Equipment overcurrent, overvoltage, overheating, short circuit protection Flexible Expansion: Water pump vibration suppression function Multi-pump online function Perfect Control Instantaneous power outage self-recovery function Water supply pressure compensation and self-cleaning function Anti-rust function