Seamless backup power for your well pump—

because water shouldn’t stop when power does.


The Only In-Line, Automated Well Pump Backup On The Market

NO POWER?
NO PROBLEM.

Front panel of the Vulcan Well Pump Backup by Sol Donum

Vulcan Well Pump Backup Unit


  • Supports 240V Pump Motors: Handles up to 1.25 HP with ease.


  • Simple Installation: Two-step setup—no transfer switch, sub-panel, or tie-in required.


  • Seamless Operation: Connect between the pump breakers and pressure switch for uninterrupted water access during power outages.


Well Pump Data Sheet Well Pump Application Note
Example visualization of solar panels on roof for Sol Donum battery storage

Solar-Powered Water Security


Harness the power of the sun to keep your water flowing. Connect your solar array to the Vulcan Well Pump Backup for continuous, sustainable power—even when the grid goes down.

Simple, direct wiring configuration — installable by any licensed electrician.

Vulcan Well Pump Battery Backup connection diagram by Sol Donum