Pentair Heater Dual Relay Kit | 520403 AquaPro Manufacturer part number SPX1485B3

Manufacturer part number SPX1485B3

Replacement shield kit designed for the Napoleon GD-303

Automation systems rely on stable communication between remotes and controllers

or after winter damage

Replacing worn straps helps maintain proper cleaner positioning and protect pool surfaces

Pentair Heater Dual Relay Kit | 520403 AquaPro Manufacturer part number SPX1485B3What This Part Is Used For Pentair 520403 Heater Dual Relay Kit is a replacement relay kit used in compatible Pentair heater control systems. It manages power distribution within the heater assembly. Why This Part Matters A faulty relay can prevent heater startup or cause intermittent operation. Replacing the dual relay kit restores proper electrical switching. Reliable relay performance supports consistent heating cycles. Key Features and