Compatible: Fit for 520556 PC100 Power Centers and IntelliChlor Salt Chlorine Generators Please confirm your model match our product Replace Part Number: OE 521034Z Please confirm your model match our product Function: Specifically engineered for Pentair salt chlorine generators and PC100 power centers, this surge protection device guards against power surges, lightning strikes, and voltage spikes—thereby safeguarding the equipment’s mainboard from damage Product Material: Engineered to endure demanding pool environments characterized by high humidity and aggressive chemical exposure: FR-4 fiberglass-reinforced epoxy PCBs—delivering exceptional resistance to moisture and corrosive chemicals Anodized aluminum heat sinks—ensuring efficient thermal dissipation and long-term operational reliability Nickel-plated brass terminals paired with flame-retardant plastic housings—providing secure, corrosion-resistant electrical connections Heat-resistant, flame-retardant wiring and IP-rated waterproof aviation connectors—guaranteeing consistent, reliable performance under wet and humid conditions Customer Service: All products undergo 100% testing and inspection before leaving the factory. If you are not fully satisfied with the product for any reason, we encourage you to communicate with our support team in a timely manner to ensure prompt resolution