The Xylem-McDonnell & Miller 354401 (Model EA-RS) is a genuine OEM replacement electrode designed specifically for use with McDonnell & Miller RS series low-water cutoff and pump control units. Keeping your boiler’s low-water cutoff system operating at peak performance is critical for safe, efficient hydronic heating — and this replacement electrode ensures your RS unit continues to accurately sense water levels and protect your boiler from dangerous low-water conditions.
Product Overview
The EA-RS electrode is the factory-specified replacement sensing component for McDonnell & Miller RS series controls. When the original electrode becomes worn, corroded, or fouled over time, replacing it with this genuine part restores the unit’s full sensing accuracy and reliability. It is engineered to the same exacting standards as the original, ensuring a precise fit and dependable performance in demanding boiler room environments.
Key Features
- Genuine OEM replacement electrode from Xylem-McDonnell & Miller
- Designed for direct compatibility with RS series low-water cutoff and pump control units
- Restores accurate water-level sensing performance
- Engineered for long-lasting durability in steam and hot-water boiler applications
- Simple drop-in replacement — no modifications required
- Helps maintain safe boiler operation by preventing low-water conditions
Application
- Compatible with McDonnell & Miller RS series low-water cutoff controls
- Suitable for steam and hot-water boiler systems
- Ideal for commercial and residential hydronic heating applications
Specifications
- Manufacturer: Xylem-McDonnell & Miller
- Part Number: 354401
- Model Number: EA-RS
- Type: Replacement Sensing Electrode
- Compatible Series: RS Units
Trust Xylem-McDonnell & Miller’s proven heritage in boiler protection controls. The 354401 EA-RS electrode is the right choice for technicians and contractors who demand genuine parts and reliable results on every service call.








