Lightning Arrestor – Economy, Heavy-Duty Models and High Voltage

Protect your pump system from damaging high-voltage surges with Merrill’s Lightning Arrestors. Available in economy or heavy-duty models, these units safely redirect lightning-induced voltage spikes to ground, shielding motors and electrical panels. Designed for use with single-phase or three-phase power systems (300V or 600V). Features: Available in economy or heavy-duty models, and high voltage models over 300V Suitable for 120/240V single-phase or three-phase installations Metal oxide varistors (MOVs) ensure reliable surge discharge Rated up to 300V or 600V high-voltage Heavy-duty models include threads and nut for secure panel installation Compatible with 2-wire and 3-wire well pump controls Versatile installation: mount at pressure switch, control box, or both for best protection Applications: Ideal for well pump systems Protects enclosed motor controls from lightning and power surges Use in residential, commercial, or agricultural pump applications