Johnson Controls P100AP-9 Pressure Control

The Johnson Controls P100AP-9 is a heavy-duty encapsulated pressure control designed for direct-mount applications in commercial refrigeration and HVAC systems. Built for reliability in demanding environments, this SPST high-pressure cutout features an open on pressure drop configuration with an automatic reset mechanism. It is factory-set to open at 25 PSIG and close at 80 PSIG, providing critical protection against low-side pressure loss or vacuum conditions. The open construction design allows for seamless integration into 120/240 Vac electrical circuits, making it a versatile choice for field replacements. Its compact, tamper-proof housing eliminates the need for capillary tubes, reducing the risk of refrigerant leaks. For technicians servicing systems with R-22, R-134a, or R-404A, the P100AP-9 offers a robust, vibration-resistant solution that ensures consistent HVAC system protection and maintains precise operational tolerances in high-cycle applications.

• Direct Mount Integration: Mounts directly to the system piping via a 1/4 inch SAE female flare nut, eliminating capillary failure points.
• Broad Voltage Compatibility: Rated for both 120 and 240 Vac, allowing for deployment across various commercial motor and pilot duty circuits.
• Automatic Reset Logic: Ensures the system returns to operation once pressure reaches the 80 PSIG reset point without manual intervention.
• Environmental Resilience: Encapsulated design protects internal switching components from dust, moisture, and debris commonly found in mechanical rooms.

What is the difference between the P100AP-9 and manual reset models?
The P100AP-9 features an automatic reset, meaning the contacts will close automatically once the pressure rises to 80 PSIG. Manual reset models require a technician to physically depress a button to restore the circuit after a trip event.

Can this control be used for high-pressure cutout?
No, the P100AP-9 is specifically designed to open on pressure drop (25 PSIG), making it suitable for low-pressure monitoring or loss-of-charge protection. For high-pressure cutout, you would require a control that opens on pressure rise.

Does this unit require a mounting bracket?
Since this is a direct-mount control with a flare fitting, it is supported by the system piping and typically does not require an external mounting bracket, saving space in tight condenser or evaporator sections.

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.