Warrick 26MB1B0 Control

The Warrick 26MB1B0 is a high-performance conductivity-based liquid level control designed for demanding process applications. As a Series 26M solid-state controller, this unit provides precise monitoring and low water cutoff (LLCO) protection for boilers, steam generators, and industrial storage tanks. Featuring a 10,000 ohm sensitivity rating, the 26MB1B0 excels in direct acting mode, utilizing the conductivity of the fluid to complete the secondary circuit without mechanical floats. This specific model is configured for a 120Vac supply voltage and includes powered contacts through its SPDT relay, simplifying the wiring of localized solenoid valves or alarm circuits. The 11-pin DIN mount style ensures a secure, vibration-resistant installation in standard control panels. Engineered for reliability, the solid-state circuitry offers a 3-second time delay on decreasing levels to prevent nuisance cycling from turbulence or splashing, making it a staple for veteran technicians managing high-limit safety interlocks.

Key Benefits for the Technician

• Enhanced Reliability: Solid-state design eliminates moving parts, reducing common failure points found in mechanical float switches.
• Industrial Integration: Standard 11-pin screw connector socket and DIN rail mounting allow for rapid field replacement and streamlined panel layout.
• Safety Compliance: Recognized as a UL 353 limit control, making it suitable for critical boiler safety and burner low water cutoff applications.
• LED Diagnostics: Integrated LED indicator provides immediate visual confirmation of the relay status, assisting in rapid troubleshooting during commissioning.
• High Load Capacity: The SPDT relay is rated for 10A at 120/240Vac, capable of handling significant resistive loads and fractional horsepower motors.

Common Questions and Troubleshooting

How do I wire the Warrick 26MB1B0 for automatic reset?
To achieve automatic reset, ensure the reset terminals remain unwired. The control will naturally energize when the liquid contacts the LLCO probe and de-energize when the level drops below it for more than three seconds.

Is this control compatible with high-purity water systems?
This model features 10K Ohm sensitivity, which is ideal for natural water and many wastewater applications. For high-purity or distilled water, a higher sensitivity module (such as the 26ME with 100K Ohm) may be required to detect the lower conductivity.

Can I use this module with a manual reset button?
Yes, by installing a normally closed (NC) pushbutton across the reset terminals, the unit will stay de-energized after a low-water event until an operator manually clears the condition and presses the button.

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.