Warrick 26NMB1A0A Control

The Warrick 26NMB1A0A Liquid Level Control is a specialized conductive probe controller engineered for low water cutoff and pump-down applications. This 120Vac module operates on a 10,000 ohm sensitivity threshold, making it ideal for standard potable water or steam boiler environments where precise resistance detection is required. As a direct acting control, the SPDT relay (1 NO / 1 NC) energizes when the liquid level reaches the probe, providing a logic-based interface for solenoid valves or motor starters. The 11-pin octal socket design allows for rapid field replacement or installation into existing control panels without rewiring the entire terminal block. This specific model features a manual reset and power outage feature, ensuring that the system remains in a safe state following a voltage interruption until a technician manually clears the status. Integrated diagnostics are supported via a remote mount normally closed pushbutton and a dedicated test feature for verification of relay operation.

• Enhanced System Safety: Built-in manual reset prevents automatic restarting after a low water cutoff event or power failure, protecting downstream equipment.
• High-Compatibility Logic: The SPDT relay configuration offers both normally open and normally closed contacts for flexible integration into various HVACR control loops.
• Streamlined Installation: Utilizes a standard 11-pin octal socket and screw connector socket for secure, vibration-resistant mounting in commercial or industrial settings.
• Rugged Performance: Rated for ambient and process temperatures up to 150°F, ensuring stability in mechanical rooms and boiler environments.

Common Questions

Is the Warrick 26NMB1A0A suitable for high-resistance liquids?
This unit is calibrated for 10,000 ohm sensitivity, which is optimal for general-purpose applications and standard water levels. For deionized water or extremely high-resistance fluids, a high-sensitivity model would be required.

How does the power outage feature impact operation?
The power outage feature is a safety mechanism that requires a manual reset if the 120V supply voltage is lost. This prevents the system from cycling unexpectedly when power is restored.

What is required for the test functionality?
The unit supports a remote mount normally closed pushbutton. When depressed, the test feature simulates a low-water condition to verify that the SPDT relay and alarms are functioning correctly.

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.