Hitachi submersible motors for deep well pumps feature plug-in type lead connection, and the flexible stranded copper motor leads are field replacable. The motor strator coil is mounted in a stainless steel frame and completely sealed in stainless steel cylinder. Space between strator is filled with epoxy resin to allow for faster and greater heat dissipation. Other features include wire insulation and double rubber seals to prevent water from entering the motor. Hitachi