The PROTLT0001 is a Type 1 surge arrestor (also spelled surge arrester) rated 480 VAC, three-phase, for the Tornatech GPX electric fire pump controller. A Type 1 surge protective device clamps high-energy voltage transients at the supply side, helping shield the controller's electronics from damaging overvoltage.
Lightning strikes and utility switching events send destructive spikes down the service conductors feeding a fire pump controller. Surge protection components absorb that energy sacrificially, so an arrestor that has taken a significant hit should be replaced promptly to keep the controller — and the fire pump system behind it — protected.
Fits Tornatech GPX electric fire pump controllers on 480 V three-phase service. Veteran-owned Cybertronic Controls keeps this arrestor in stock in Hammond, Louisiana; call 985-351-5681 to check compatibility with your GPX configuration before you order.