Pentair BioShield Ballast (Previous Generation) | BioShield UV System 50W, 80W & 120W | 523032
Pentair Pool Products and Parts

Pentair BioShield Ballast (Previous Generation) | BioShield UV System 50W, 80W & 120W | 523032

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SKU:
523032

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About This Item

The Pentair BioShield Ballast (523032) is the OEM replacement previous-generation ballast for the Pentair BioShield UV disinfection system, covering the 50W, 80W, and 120W models.

⚠️ IMPORTANT: PREVIOUS GENERATION BALLAST ONLY
Part 523032 fits previous-generation BioShield UV systems only. If your system is a current-generation unit, this ballast will not be the correct replacement. Verify the generation of your BioShield system against the part number on the original ballast before ordering.

The ballast regulates the electrical current supplied to the UV lamp within the BioShield system, maintaining the stable arc voltage required for consistent UV output. A failed or degraded ballast results in reduced UV intensity or complete lamp failure, compromising the system's ability to disinfect water. This single replacement ballast (sold individually) restores full electrical function to the UV chamber across all three wattage variants of the previous-generation BioShield platform.

Specifications

Pentair Part Number 523032
Part Name BioShield Ballast (Previous Generation)
Compatible Wattages 50W, 80W, and 120W (previous generation only)
Quantity Included Each (1)

Fits Into

Brand Equipment Line Model / Part Number Notes
Pentair BioShield UV System — BioShield Series 522635 Previous generation ballast for 50W, 80W, and 120W models only
Pentair BioShield UV System — BioShield Series 522636 Previous generation ballast for 50W, 80W, and 120W models only
Pentair BioShield UV System — BioShield Series 522637 Previous generation ballast for 50W, 80W, and 120W models only

Compatibility is based on Pentair parts documentation and available OEM records. This is not an exhaustive list. For certainty, verify the part number in your equipment's manual or on the original part itself before ordering.

Pro Tip

Before ordering, locate the part number printed or labeled on your existing ballast and confirm it matches 523032. The BioShield platform spans multiple generations, and the ballast for current-generation units is a different part number. If your original ballast carries a different number, check your equipment's service manual or contact Pentair to identify the correct current replacement before purchasing.

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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Pentair Pool Products and Parts

About Pentair Pool Products and Parts

Pentair is often considered the "gold standard" for pool professionals, and for good reason. Founded in 1966 (originally by five inventors making high-altitude balloons!), the company has evolved into the global leader in smart, sustainable water solutions. For the DIY homeowner, Pentair represents the intersection of rugged durability and silicon valley-tier technology. They pioneered the Variable Speed Pump revolution with the IntelliFlo®, saving American pool owners millions in energy costs. Today, their ecosystem focuses heavily on automation, allowing you to control your pump, heater, lights, and chemistry from a single app. While they are a favorite among professional builders, their "EC" (E-Commerce) line of equipment allows homeowners to access pro-grade technology with valid warranties for DIY installation.

Why We Trust Pentair Pool Products and Parts
Energy Efficiency Leaders: Recipient of the ENERGY STAR® Partner of the Year award for over a decade; their pumps are designed to pay for themselves in energy savings.

Smart Automation: The Pentair Home App and IntelliCenter systems offer best-in-class control over your pool ecosystem from anywhere in the world.

Professional Pedigree: The brand most often recommended and installed by pool builders for high-end residential pools.

Eco-Conscious: Dedicated to reducing water waste and energy consumption through "Green" technology innovations.

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