Johnson Controls P100AP-2 Pressure Control

The Johnson Controls P100AP-2 is a professional-grade encapsulated pressure control engineered for direct mount installation in high-demand refrigeration and air conditioning environments. This SPST pressure switch features an open on pressure drop (open-low) action, making it a reliable solution for low-pressure cutout or condenser fan cycling applications. Factory-calibrated for precision, the unit is set to open at 35 PSIG and close at 60 PSIG, providing a consistent 25 PSI differential to prevent rapid equipment short-cycling. Built with open construction and featuring 120/240 Vac contact ratings (6.0 FLA / 36.0 LRA), the P100AP-2 is compatible with all common non-corrosive refrigerants. The integrated automatic reset ensures system continuity once pressures return to the 60 PSIG setpoint, while its compact size and lightweight design allow for seamless integration onto 1/4-inch SAE female flare fittings without additional brackets.

• Internal Schrader Depressor: Features a standard 1/4 inch female flare fitting with a built-in depressor for simple, direct installation onto service ports.
• Robust Electrical Performance: High-capacity SPST contacts rated for both 120V and 240V AC pilot duty and motor loads.
• Environmentally Sealed: Encapsulated design protects internal snap-action components from dust, moisture, and vibration common in mechanical rooms.
• Universal Compatibility: Validated for use with R-22, R-410A, and other non-corrosive refrigerants within commercial refrigeration and HVAC systems.

What is the primary application for the P100AP-2?
This control is typically utilized as a low-pressure safety cutout to protect compressors during loss of charge or as a head pressure control for fan cycling in low ambient conditions.

Does this switch require manual intervention after a trip?
No, the P100AP-2 features an automatic reset mechanism that closes the circuit once the system pressure rises back to 60 PSIG.

Can this be mounted in any orientation?
Yes, the direct-mount, lightweight construction allows for flexible orientation on refrigeration piping, provided the 1/ SAE flare connection is secure.

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.