TL;DR
A pump control box is the wall-mounted enclosure that houses the starting components—start capacitor, relay, and sometimes overload protection—for a three-wire submersible well pump, keeping them serviceable above ground instead of sealed in the motor downhole. Boxes are matched to the motor's horsepower and voltage, and a failed capacitor in one is among the cheapest fixes for a well that suddenly stops.
What it means
A pump control box is the wall-mounted enclosure that houses the starting components—start capacitor, relay, and sometimes overload protection—for a three-wire submersible well pump, keeping them serviceable above ground instead of sealed in the motor downhole. Boxes are matched to the motor's horsepower and voltage, and a failed capacitor in one is among the cheapest fixes for a well that suddenly stops. Two-wire pumps build these parts into the motor and need no box.
Where it sits in the glossary
Pump control box is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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