Product Overview

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

With its updated modular design, improved serviceability, and compatibility with existing IntelliChlor systems, the IntelliChlor Plus40 is a strong replacement option for customers needing to restore chlorine production without replacing the entire salt system.

Ideal For

Residential saltwater swimming pools

Pools up to 40,000 gallons

Replacing legacy Pentair IntelliChlor IC40 cells

Replacing EC-520555 salt cells

Compatible IntelliChlor power center systems

Pool owners wanting a genuine Pentair salt cell replacement

Customers upgrading to the newer IntelliChlor Plus platform

Key Features

Genuine Pentair IntelliChlor Plus40 salt chlorine generator cell

Rated for pools up to 40,000 gallons

Produces up to 1.40 lbs of chlorine per 24 hours at 100% output

Updated modular design for improved serviceability

Drop-in replacement for compatible legacy IntelliChlor IC40 systems

Compatible with existing compatible IntelliChlor power center setups

Converts ordinary pool salt into chlorine

Helps reduce manual chlorine handling

Built-in diagnostics and status indicators

Self-cleaning operation helps reduce scale buildup

Designed for residential saltwater pool sanitation

Benefits

The Pentair IntelliChlor Plus40 EC-523735 helps maintain clear, sanitized pool water by generating chlorine directly from dissolved salt in the pool. This reduces the need for frequent manual chlorine dosing while keeping sanitizer production consistent when the system is properly sized and balanced.

As the next-generation replacement for the IntelliChlor IC40 platform, the Plus40 provides a modernized design while remaining compatible with existing compatible IntelliChlor installations. This makes it a convenient replacement when the existing IC40 cell has reached the end of its service life.

Specifications

Warranty & Compatibility

Professional installation is recommended for proper setup, system compatibility, water chemistry verification, and warranty compliance. Before ordering, confirm the existing salt system model, power center compatibility, cell size, pool gallon rating, plumbing condition, cable connection, and whether the customer needs the EC-523735 / 523735-EC version.

This item is designed as a replacement cell for compatible IntelliChlor systems. It is not a complete standalone salt system unless paired with the required compatible power center and controls.

Customer-Facing Q&A

Q: What model number is this salt cell?
A: This listing is for the Pentair IntelliChlor Plus40 model EC-523735 / 523735-EC.

Q: What pool size is the Plus40 rated for?
A: The IntelliChlor Plus40 is rated for pools up to 40,000 gallons.

Q: What older Pentair cell does this replace?
A: It is commonly used as the next-generation replacement for the IntelliChlor IC40 / EC-520555 where compatible.

Q: How much chlorine does it produce?
A: The Plus40 produces up to 1.40 lbs of chlorine per 24 hours at 100% output.

Q: Is this a complete salt system?
A: No. This is the replacement salt cell. A compatible IntelliChlor power center or compatible system setup is required.

Q: Is this a drop-in replacement?
A: Yes, for compatible IntelliChlor systems. Always confirm system compatibility before ordering.

Q: What is the UPC?
A: The UPC listed for EC-523735 / 523735-EC is 788379918644.

Q: How much does it weigh?
A: Some listings show approximately 8.8 lbs item weight, while Shopify product data shows 15 lbs shipping weight. For Shopify shipping, use 15 lbs unless you physically weigh the packaged item.

Q: Should this be professionally installed?
A: Yes. Professional installation is recommended for proper setup, compatibility verification, and warranty compliance.