Warrick 16ML1A0 120V 8 Pin OCT

The Warrick 16ML1A0 is a high-performance Series 16M plug-in liquid level control designed specifically for industrial and HVACR environments requiring precise conductivity-based monitoring. Built with a modular 8-pin octal plug-in configuration, this unit simplifies field replacement and reduces downtime on critical systems like condensate tanks, boiler reservoirs, and pump-up systems. Operating at 120VAC, the 16ML1A0 utilizes inverse acting mode, meaning the internal SPDT load contacts energize upon power application and de-energize when liquid contacts the probe.

This solid-state controller features a fixed 10K Ohm sensitivity, making it ideal for standard water and high-conductivity fluids. The 10A-rated contacts are rugged enough to handle motor pilot duty or direct signaling to solenoids and alarms without the need for additional slave relays. Housed in a durable Lexan enclosure, it supports both single-level and differential-level service. For HVACR technicians, this translates to stable performance in ambient temperatures ranging from -40°F to 150°F. Whether you are managing pump-up applications or high-level alarms, the solid state reliability of the Warrick 16ML1A0 ensures accurate repeatability without moving parts to foul or fail.

• Modular 8-Pin Design: Fits standard octal sockets for rapid installation and maintenance in existing control panels.
• Inverse Acting Logic: Optimized for "fill" or "pump-up" sequences, ensuring the relay state changes reliably as liquid levels rise.
• Solid State Reliability: No moving parts within the sensing circuit, eliminating mechanical wear and extending the lifecycle of the liquid level relay.
• Direct Load Control: High-capacity SPDT contacts rated for 10A @ 120VAC facilitate direct control of solenoid valves or small pumps.
• Broad Operating Envelope: Engineered to withstand harsh mechanical rooms with a wide operating temperature range.

• What is the difference between direct and inverse acting on the 16ML1A0? This unit is inverse acting, meaning the relay is energized when probes are "dry" and de-energizes when the liquid touches the high probe. This is the standard configuration for pump-up control.
• Can this be used for differential level service? Yes. By utilizing the 8-pin octal socket wiring, you can configure the unit for differential service using three probes (High, Low, Reference) or single-level high/low alarms using two probes.
• Is the sensitivity adjustable on this model? No, the 16ML1A0 features a factory-set 10K Ohm sensitivity. For liquids with very low conductivity (like deionized water), a higher sensitivity module would be required.

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.