SQE 3" multistage smart submersible pump intended for domestic water supply, irrigation and environmental engineering applications. The pump features soft start and stop as well as protection against dry running, overvoltage, undervoltage, overload and overheating. The motor is a single-phase permanent magnet rotor type motor that ensures optimal efficiency across a wide load range. The pump is controlled using the SQE constant pressure controller CU301 or a conventional pressure switch.