The Warrick 26MA1A0 is a high-sensitivity liquid level control relay designed for reliable low-water cutoff (LWCO) and pump-up/pump-down applications in demanding HVACR environments. Operating on 120V AC, this 4.7K Ohm sensitivity control is optimized for conductive liquids such as potable water and hydronic system fluids. The 11-pin plug-in design simplifies field replacement and installation in consolidated control panels. This unit utilizes solid-state circuitry to monitor probe resistance, providing precise actuation for boiler feedwater systems and industrial storage tanks. By maintaining a steady signal even in turbulent conditions, it protects pumps from dry-run damage and ensures structural integrity of steam vessels. Contractors rely on the Series 26 for its DPDT contact configuration, allowing for simultaneous control of burner circuits and alarm indicators. Proper level control installation requires high-quality probes to ensure long-term signal accuracy and system safety. Key Benefits Standard 11-Pin Base: Facilitates rapid "plug and play" replacement in existing control cabinets, reducing downtime during service calls. 4.7K Ohm Sensitivity: Specifically calibrated for high-resistance liquids, ensuring reliable switching in standard water applications. Solid-State Logic: Eliminates mechanical wear associated with older float-style switches, increasing the duty cycle life of the system. DPDT Switching: Offers versatile wiring options for interlocking with HVAC burners, external pumps, or remote monitoring systems. Compact Footprint: The modular housing allows for high-density mounting on DIN rails or panel backplates when used with appropriate sockets. Common Questions Is the Warrick 26MA1A0 compatible with deionized water? Standard 4.7K Ohm models are typically designed for tap or boiler water. Systems utilizing deionized or ultra-pure water may require a higher sensitivity model, such as the 10K or 100K Ohm variants, due to the lower conductivity of the liquid. Can I use this relay for both high and low level alarms? Yes, by utilizing different terminal configurations and probe placements, this relay can be wired for either high-level alarm or low-level cutoff functionality, depending on your piping and wiring schematic. What type of socket is required for the 11-pin connection? This unit fits a standard 11-pin round (circular) socket, commonly found in industrial control panels, which allows for secure electrical termination and easy removal. 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.
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