Design & construction: The pump typically has a sealed motor + pump assembly, meant to be fully submerged — so the motor is cooled by the surrounding water, reducing overheating risk if used properly.
Intended use: Boreholes, deep wells or underground water sources — anything where a “surface pump” wouldn’t reach. In other words: drawing water from a depth, pumping to storage tanks or pressure systems.
Performance (head & flow): While exact numbers depend on the model, 1 HP submersible pumps often deliver a max head (vertical lift) sufficient for domestic water supply from moderately deep wells. Many comparable 1 HP pumps in markets cited reach tens of meters of head (depending on depth and pipe configuration).