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