Made of automotive-grade porcelain, this ceramic resistor lowers potentially damaging high voltage produced by PV modules to the 13.6 volts maximum comfortably handled by most pumps. Protects
sensitive electronics and fan and pump motors from over-voltage in solar-direct applications. 3"L x ?"W x 5/8"D. 1/3 lb. Mexico.
This ballast resistor can protect your pumps from high PV voltage damage.