Ronk Type 4SUB Add-A-Phase Power Converter for 1-60HP, 480V Motor
The Type SUB is specifically designed for use with deep well submersible pump motors and submersible waste water pump motors. Because these motors are much more specialized than standard T- frame motors, they generally require more amps for a given horsepower than the standard motor does. Therefore, the Type SUB is designed and built to handle the extra load requirements of this type motor. The Type 4SUB models convert a single phase 480 Volt to a three phase 480 Volt.