Grundfos 91126219 SA-SPM5 Control Box. This Submersible Pump Control Box is specifically designed for a wide range of Grundfos 1/2 to 5 HP (Horse Power) MS 3-Wire, Single Phase Motors. This Control Box is equipped with a heavy duty epoxy coated steel frame that protects the controls from harsh winter and summer conditions. This Control Box features a quick removal cover that will electrically disconnect the system. This Grundfos 91126219 SA-SPM5 Control Box is warranted to the original user only to be free of defects in material and workmanship for a period of 24 months from date of installation.