Description
Inline zinc anode designed to reduce galvanic corrosion in pools by providing a controlled sacrificial metal. It installs in the pool bonding system and is intended to remain in contact with pool water to function as a corrosion control device. The unit also meets electrical bonding requirements for pools and is suitable for use with saltwater sanitation systems.
Quick Answer: What Is the CMP 25810-400-050?
The CMP 25810-400-050 is a zinc anode: CMP Pool Defender Inline Zinc Anode. It is brand new, ships in 1-2 business days, and is backed by the CMP manufacturer warranty.
CMP 25810-400-050 Specifications
| Brand | CMP |
|---|---|
| Equipment Type | Zinc Anode |
| Model Number | 25810-400-050 |
| Pool Type | Above Ground, In-Ground |
| UPC | 849640025246 |
Key Features
- Inline zinc anode for galvanic corrosion control
- Connects to pool bonding wire for electrical grounding
- Meets NEC 2008 680.26(C) as a water bonding device
- Complies with UL‑1081, UL‑1563, CSA C22.2‑218.1
- Compact space-saving design for tight installations
How It Works
A salt chlorine generator converts dissolved salt into chlorine through electrolysis. Water passes through the cell, where coated titanium plates split salt into chlorine that sanitizes the pool, then the chlorine reverts to salt. The control unit sets output, monitors salt level, flow and temperature, and reverses polarity to reduce scale on the plates.
How to Choose the Right Zinc Anode
- Size the cell to at least your pool volume; many pros choose one size larger for hot climates and heavy use.
- Match replacement cells to the control board and cell model they are designed for.
- Confirm whether unions, flow switch and power supply are included.
- For zinc anodes, choose the style (inline, skimmer or equipment) that fits your system.
If you are replacing an existing part, the fastest way to confirm compatibility is to match the brand and model number on the old equipment. Send us the model number or a photo of the label and our team will help confirm the 25810-400-050 is the right fit before you order.
Installation and Safety
Install the cell after the filter and heater as the last piece of equipment before water returns to the pool. Power supplies require line-voltage wiring and bonding by a licensed electrician or qualified pool professional per NEC Article 680.
Maintenance Tips
- Keep salt within the manufacturer's range and test it monthly.
- Inspect the cell for scale every few months and clean with the manufacturer-approved method only when needed.
- Keep pH and calcium hardness balanced to reduce scaling.
- Track cell hours; cells are consumable and lose output toward end of life.
What's Included
This listing is for the CMP 25810-400-050 as described in the specifications above. Plumbing, wiring, unions and accessories are not included unless they are listed in the product name or specifications.
Built for Homeowners, Pool Pros and Property Managers
- Homeowners: match your existing model number, then reach out if you want a second set of eyes on compatibility before you order.
- Pool service pros and builders: order quickly, track every shipment, and reorder common parts for your routes and builds.
- Property managers and commercial pools: standardize equipment across properties and plan replacements with help from our team.
White Paper
Frequently Asked Questions About the CMP 25810-400-050
How long does a salt cell last?
Most cells are rated in operating hours and typically last several seasons; balanced water and proper sizing extend life.
Do I still need to test chlorine?
Yes. Test free chlorine, pH and salt regularly and adjust output as needed.
Can I add salt to any pool?
Most pools can use salt chlorination, but check equipment, natural stone and metal components for salt compatibility.
Is this the genuine CMP part?
Yes. It is brand new CMP equipment (model 25810-400-050) covered by the manufacturer warranty. Warranty terms vary by product and application; see the manufacturer documentation or ask our team.
