www.thedriller.com/articles/84753-submersible-pump-protectors
Submersible Pump Protectors
March 28, 2006

Pentek submersible pump protectors protect 1⁄2 HP to 15 HP, single-phase, two- and three-wire motors against dry well, over/under voltage, rapid cycling and flow restriction. Intended for all applications, the Pentek submersible pump protectors feature an external infrared diagnostic capability and more.
Pentek, Card No. 93