McDonnell & Miller 354401 Electrode Assembly

The McDonnell & Miller 354401, also identified by model number EA-RS, is a precision-engineered electrode assembly designed specifically for RS Series remote sensors. This conductance probe is a critical component for maintaining accurate liquid level control in both steam and hot water boiler applications. It is the direct replacement part for RS-1-BR-1 and RS2-BR-1 units, ensuring seamless boiler control performance without the need for extensive system modifications.

Built for the rigors of mechanical rooms, the EA-RS electrode facilitates reliable high-water or low-water sensing by completing an electrical circuit through the water. This assembly is optimized for durability, featuring Teflon insulation to prevent short circuits and nuisance shutdowns caused by scale buildup. For technicians servicing McDonnell & Miller RS units, this 1/4-inch diameter probe provides a robust solution for water level detection where standard float-style controls may not be suitable due to space or turbulence constraints.

• Direct Compatibility: Engineered as a drop-in replacement for EA-RS electrodes used in RS-1 and RS-2 series remote sensors.
• Enhanced Reliability: Utilizes conductance technology for precise low water cut-off and alarm functions.
• Industrial Durability: High-grade construction materials withstand the thermal stresses of high-pressure boiler environments.
• Easy Installation: Features standard threading and wiring terminals for efficient field replacement by qualified contractors.

Which remote sensor models are compatible with the 354401?
This McDonnell & Miller replacement electrode is specifically designed for use with RS-1-BR-1, RS2-BR-1, and RS-1-LP remote sensor units.

Can the electrode be trimmed for specific level requirements?
Yes, technicians can cut the metallic probe to the required length for custom high or low-level sensing, provided 1/8 inch of insulation is stripped from the tip after cutting.

How does this assembly prevent signal interference?
The integrated Teflon insulator ensures that the probe remains electrically isolated from the sensor housing, preventing false grounding and ensuring accurate conductance measurements.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.