Johnson Controls P20EB-2 Limit Switch

As a veteran tech, you know the importance of a reliable Johnson Controls P20EB-2 Limit Switch when servicing commercial and residential package units. This high-side air conditioning pressure control limit switch is engineered for precision, featuring a robust SPDT switch configuration that offers versatile wiring options for your safety circuits. With an adjustable range of 100 PSI to 425 PSI and a fixed 76 PSI differential, it provides stable head pressure management and cutout protection for all non-corrosive refrigerants. The P20EB-2 is the direct replacement for P20EA-1 and P20EA-14, allowing for a seamless drop-in fit without re-engineering the mounting bracket. Whether you are dealing with water-cooled or air-cooled refrigeration systems, this electromechanical control ensures automatic reset functionality to minimize downtime. Its compact die-cast housing and 36-inch capillary with a 1/4-inch sweat section make it the go-to HVAC high pressure cutout for tight installations where repeatability and durability are non-negotiable on the job site.

• OEM Compatibility: Functions as the verified replacement for P20EA-1 and P20EA-14, ensuring consistent performance in legacy Johnson Controls setups.
• Versatile Application: Designed for high pressure control in package AC units, heat pumps, and small water chillers using standard non-corrosive refrigerants.
• Snap-Action Reliability: The SPDT contacts provide clean break-and-make transitions, reducing internal arcing and extending the life of the control circuit.
• Field Adjustable: Features a screwdriver-adjustable set point within the 100-425 PSIG range for precise fine-tuning based on specific system requirements.
• Rugged Construction: Built with a dust-tight contact unit and a vibration-resistant housing to withstand the harsh environments of rooftop and mechanical room installs.

What is the difference between the P20EB-2 and the P20EA models?
The P20EB-2 is the modern direct replacement for the discontinued P20EA-1 and P20EA-14 series. It maintains the same 76 PSI differential and pressure range, ensuring your system logic remains unchanged after the swap.

Can this switch be used for low-pressure applications?
This specific model is calibrated for high pressure limit control (100 to 425 PSI). If your application requires a low-side cutout, you should verify the required set point, as this unit is optimized for high-side safety monitoring.

Does the P20EB-2 require a manual reset after a pressure trip?
No, this model features automatic recycle (automatic reset). Once the system pressure drops back below the differential threshold, the contacts will automatically reset to resume normal operation.

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.