Product Overview

The Pentair IntelliChlor® Plus40 Salt Chlorine Generator Cell, part number 523735, is a genuine Pentair replacement salt cell designed for pools up to 40,000 gallons. Built as the next-generation replacement for the IntelliChlor IC40 cell, the Plus40 helps convert dissolved pool salt into chlorine for consistent, convenient pool sanitation.

The IntelliChlor Plus40 features an updated modular design for improv66

3ed serviceability, accuracy, and value. It is designed as a drop-in replacement for compatible first-generation IntelliChlor and iChlor salt chlorine generator systems, helping pool owners upgrade or replace an aging salt cell without major plumbing changes.

Ideal For

Residential saltwater pools up to 40,000 gallons.

Pool owners replacing an aging or depleted Pentair IntelliChlor IC40 cell.

Existing Pentair IntelliChlor or iChlor salt chlorination systems.

Customers looking for a genuine Pentair salt cell replacement.

Pools where reduced handling, storing, and dosing of traditional chlorine products is preferred.

Service professionals upgrading compatible Pentair salt systems with the newer Plus40 cell.

Key Features

40,000-Gallon Pool Capacity

The IntelliChlor Plus40 is designed to sanitize residential pools up to 40,000 gallons, making it a strong choice for medium to large backyard pool systems.

Direct Replacement for IC40

This cell is commonly listed as the replacement for the Pentair IntelliChlor IC40 cell, including model numbers 520555 and EC-520555.

Drop-In Installation Design

The Plus40 is designed as a drop-in replacement for compatible existing Pentair salt chlorine generator installations, helping reduce the need for major plumbing changes.

Improved Modular Design

The updated IntelliChlor Plus design provides improved serviceability, allowing certain components and diagnostics to be more accessible compared with earlier-generation cells.

Enhanced Salt Reading Accuracy

The redesigned conductivity sensor helps provide more accurate salt-level readings, supporting better system monitoring and easier maintenance.

Built-In Diagnostics and Status Indicators

The IntelliChlor Plus40 includes easy-to-read system indicators and built-in diagnostics to help monitor salt level, sanitizer output, cell status, and system warnings.

Compatible with Existing Pentair Systems

When properly matched, the Plus40 works with compatible IntelliChlor power centers and Pentair automation systems already in place.

Benefits

Helps maintain clean, clear, and comfortable pool water.

Reduces the need to buy, handle, store, and manually add traditional chlorine.

Provides a genuine Pentair replacement path for compatible IC40 systems.

Supports consistent chlorine production from dissolved pool salt.

Helps simplify pool maintenance for residential pool owners.

Updated design improves serviceability compared with earlier IntelliChlor models.

Designed for easy replacement in compatible existing Pentair salt systems.

Specifications

Customer-Facing Q&A

What pool size is the Pentair IntelliChlor Plus40 designed for?

The IntelliChlor Plus40 is designed for pools up to 40,000 gallons.

What does the IntelliChlor Plus40 replace?

This model is commonly used as the replacement for the Pentair IntelliChlor IC40 salt cell, including part numbers 520555 and EC-520555.

Is this a complete salt system?

No. This listing is for the replacement salt chlorine generator cell only unless your supplier package specifically includes additional components. A compatible Pentair IntelliChlor power center is required for operation.

Does this require new plumbing?

When replacing a compatible existing IntelliChlor cell, the Plus40 is designed as a drop-in replacement and typically does not require additional plumbing.

How much chlorine does this cell produce?

The IntelliChlor Plus40 is commonly listed with chlorine production up to 1.40 lbs per 24 hours at 100% output.

Can this work with Pentair automation?

Yes, when connected to compatible Pentair equipment, the IntelliChlor Plus40 can work with existing Pentair automation systems.

Is this the same as an IC40?

It is the newer IntelliChlor Plus40 replacement for the IC40. It serves the same 40,000-gallon class but uses Pentair’s updated Plus/LT design.