Johnson Controls P70CA-400 Pressure Control

The Johnson Controls P70CA-400 is a heavy-duty single pole pressure control engineered for high-pressure cutout applications in commercial refrigeration and HVAC systems. As a veteran-preferred electromechanical pressure switch, this high pressure cutout features a SPST (Single Pole Single Throw) configuration that is designed to open high, effectively de-energizing the compressor circuit upon reaching the designated setpoint. Designed for compatibility with non-corrosive refrigerants and R-410A, it offers a wide pressure range from 200 psi to 610 psi, ensuring precise safety limits for high-side protection. The inclusion of a 36" capillary with a 1/4" flare nut provides the flexibility needed for secure manifold or line mounting. Featuring the Sight-Set calibrated scale, this Penn pressure control allows for rapid visibile adjustments of both the cutout and the 60 to 150 psi differential without removing the rugged NEMA 1 steel enclosure. This automatic reset pressure control is a critical component for maintaining system integrity and preventing motor overload during head pressure spikes.

• Broad Operating Range: Fully adjustable from 200 to 610 psi to meet specific high-limit requirements across various commercial HVACR platforms.
• Precision Differential: Features an adjustable differential of 60 to 150 psi, allowing technicians to fine-tune system cycling and prevent short-cycling.
• Simplified Calibration: The Sight-Set scale provides a clear, visible display for accurate setpoint verification under field conditions.
• Rugged Construction: Built with a durable NEMA 1 steel housing to protect internal switch-block components in demanding mechanical rooms.
• Universal Connectivity: Includes an integrated 36-inch capillary with a standard 1/4 inch flare nut for direct attachment to high-side service ports.

What is the difference between the P70CA and P70DA models?
The P70CA-400 is an automatic reset control, meaning it closes the circuit once pressure drops below the differential. The P70DA models require a manual reset, which is often mandatory for certain safety code applications to ensure a technician inspects the system after a high-pressure trip.

Is this control compatible with R-410A systems?
Yes, the P70CA-400 is rated for high-pressure non-corrosive refrigerants including R-410A, with a maximum working pressure robust enough to handle modern high-side requirements.

Can this be used for condenser fan cycling?
While P70C models are primarily used for high-pressure cutout (Open High), fan cycling typically requires an "Open Low" (P70A) action. Always verify your specific wiring diagram and switch logic before installation.

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.