The Pentair IntelliCenter i5X Expansion Circuit Board 523051 is a genuine OEM expansion module designed to extend the capabilities of your IntelliCenter automation system. This add-on board increases relay capacity, enabling control of additional pool and spa equipment—including extra pumps, lighting zones, water features, and accessories—without replacing your existing control panel.

Included with the expansion board is a custom faceplate that seamlessly integrates into your IntelliCenter enclosure for a clean, factory-finished appearance. Perfect for pool owners expanding their automation footprint or adding new features, the i5X Expansion Board delivers reliable performance and effortless integration.

Pentair IntelliCenter i5X Expansion Circuit Board 523051 Compatibility

• Works with Pentair IntelliCenter automation systems

• Compatible with older IntelliCenter panels requiring relay expansion

• Ideal for systems needing control of additional features (pumps, heaters, lights, actuators, etc.)

• Integrates with Pentair automation hardware including IntelliFlo®, IntelliChlor®, and lighting controllers

• Requires installation within compatible IntelliCenter enclosure and power center

Key Features

• Genuine Pentair part, supplied under manufacturer part number 523051.
• Tied to a specific control platform and firmware generation.
• Ships from our US warehouse with tracking on dispatch.

Specifications

• Brand: Pentair
• Manufacturer part number: 523051
• Category: Pool Automation
• Condition: New
• Shipping weight: 3 lb

Frequently Asked Questions

Is the 523051 a genuine Pentair part?

Yes. The 523051 is a Pentair part supplied under that manufacturer part number. It is not a generic substitute.

Will this work with my existing control system?

Automation boards and cards are tied to specific platforms and firmware generations and rarely cross between them. Confirm your controller model and firmware revision before ordering.

Can I add automation to an older pool?

Yes, though older equipment may need relays or actuators to be controllable. Single speed pumps and non-communicating heaters can usually be switched but not modulated.

How do I confirm this part fits my equipment?

Check the part number stamped on the component you are replacing, or find it on the parts schematic in your owner's manual. If the number differs or is unreadable, send us your equipment model and serial number and we will verify fitment before you order.

How quickly does this ship?

In-stock items ship from our US warehouse on business days. You will receive tracking by email once the order leaves the warehouse.

Can I return it if I ordered the wrong part?

Unopened, uninstalled items can be returned within 30 days. Equipment that has been installed or plumbed cannot be returned, so confirm fitment before installation.

Is this covered by a warranty?

Manufacturer warranty terms vary by brand and product. Warranty claims generally require proof of purchase and, on installed equipment, evidence of professional installation.