This control box is specifically designed for 2HP, 3 wire, 230V, 1 phase Goulds and Myers pumps with either CentriPro or Pentek motors. Voltage Relay for installer convenience 230-volt models – 208-volt relay, 9K479, available for low voltage applications. Start Capacitor for starting torque run Capacitors for efficiency and quiet operation. Type 3R enclosure for indoor or outdoor mountingAccepts up to #2 AWG wire multiple knockouts and two ground terminals. Higher HP models require heavy duty pressure switches manual reset overloads on 1½ - 5 HP models