Warrick 26MB1A0 Control

The Warrick 26MB1A0 is a specialized low water cutoff module engineered for demanding boiler liquid level control applications. As a conductivity-based liquid level control, this unit utilizes the conductive properties of water to complete a circuit, providing a fail-safe mechanism to prevent dry-fire conditions in hydronic systems and industrial boilers. Operating on a 120Vac supply voltage, the 26M series is CSD-1 compliant, making it a standard choice for technicians requiring reliable UL 353 limit control integration. This specific model features a 10,000 ohm sensitivity rating, optimized for standard water quality environments where precise electrode sensing is paramount.

Built as an 11-pin octal socket plug-in module, the Warrick 26MB1A0 facilitates rapid field replacement and simplifies wiring via the included screw connector socket. The direct acting mode of operation ensures the SPDT relay (1 NO/1 NC) de-energizes upon a loss of liquid detection, protecting critical heating elements. Designed with powered contacts and a robust solid-state architecture, it maintains accurate switching performance even in high-temperature environments. This control is housed in a clear Lexan enclosure for visual status monitoring via the onboard LED indicator, ensuring that field contractors can quickly verify system status during routine maintenance or troubleshooting.

• CSD-1 Compliance: Meets strict safety standards for boiler low water cutoff protection.
• Modular Installation: Standard 11-pin octal plug-in design allows for fast swaps without rewiring the entire panel.
• Direct Acting Reliability: Ensures the system shuts down immediately if water levels drop below the probe sensors.
• Solid-State Durability: No moving parts within the sensing circuit reduces wear and improves long-term accuracy.
• LED Diagnostics: Provides immediate visual confirmation of relay status and power conditions for the technician.

What is the difference between powered and non-powered contacts?
The 26MB1A0 features powered contacts, meaning the control supplies the voltage to the load terminals. If your system requires dry (isolated) contacts, you would typically look at the 26NM series.

Can this control be used with different probe types?
Yes, this module is compatible with various Warrick electrode fittings and probes, provided the overall resistance of the liquid does not exceed the 10K ohm sensitivity threshold.

Does this unit include a time delay?
This model typically includes a standard 3-second time delay on decreasing levels to prevent nuisance shutdowns caused by turbulence or surging within the boiler.

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.