Warrick 26MB1A0E Liquid Level Control

The Warrick 26MB1A0E Liquid Level Control is a technical-grade Series 26M low water cutoff module specifically engineered for high-demand hydronic and steam boiler environments. As a veteran-preferred conductivity-based liquid level control, this 120VAC plug-in module utilizes a 10,000 ohm sensitivity threshold to detect the presence of conductive fluids with high precision. Designed for direct-acting operation, the unit ensures reliability through a solid-state architecture that eliminates moving parts within the tank, significantly reducing mechanical failure risks. The SPDT relay provides powered contacts (1 Normally Open / 1 Normally Closed) rated for 10 amps, ideal for controlling burners or alarm circuits. This module is UL 353 listed for limit control applications and features a robust 11-pin octal socket design for rapid replacement in boiler low water cutoff systems.

Key Benefits for Professionals

• Direct Acting Reliability: Configured for fail-safe low water cutoff protection, ensuring the burner circuit opens immediately upon a dry probe condition.
• Industrial Sensitivity: The 10K ohm sensitivity is optimized for standard water and condensate applications, preventing false trips from mist or foam while maintaining accurate 12VAC secondary probe voltage.
• Enhanced Safety Logic: Features manual reset with power outage protection, requiring operator intervention after a low-water trip to ensure system integrity before resuming operation.
• OEM Compatibility: Standard 11-pin octal socket style with screw connector termination provides a direct drop-in replacement for existing Gems Sensors and Warrick control footprints.
• Robust Temperature Rating: Engineered to operate in ambient environments ranging from -40°F to 150°F, suitable for mechanical rooms and industrial processing plants.

Common Installation & Technical Questions

How do I test the 26MB1A0E circuit without draining the system?
This module includes a built-in test feature. By holding the manual reset button for three seconds, you can simulate a dry probe condition to verify the SPDT relay trips and the LED status indicator responds correctly.

Will this module work with highly deionized or pure water?
The 10,000 ohm sensitivity is designed for standard conductive liquids. For high-resistance fluids like pure deionized water, a higher sensitivity module from the 26M series (such as 26K or 50K ohm models) may be required to maintain consistent conductivity sensing.

What is the purpose of the 3-second time delay?
The standard Series 26M logic includes a 3-second delay on a falling liquid level. This prevents "relay chattering" or nuisance tripping caused by turbulence or wave action at the probe tip, protecting your contactors and burner components.

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.