P70DA-2C Johnson Controls HIGH Pressure Cutout

Overview

The Johnson Controls P70DA-2C is a high-pressure cutout control designed primarily for commercial refrigeration and air conditioning systems. Engineered specifically to be compatible with ammonia refrigeration, this electromechanical pressure control features a single-pole single-throw (SPST) switch configuration that opens on high pressure rise. It incorporates a manual reset lockout mechanism, ensuring the system remains shut down after a high-pressure trip until it is safely inspected and manually reset.

Features

• Ammonia Compatibility: Constructed with materials such as a stainless steel internal pressure connection suitable for corrosive ammonia applications.
• Manual Reset Lockout: Provides a trip-free lockout mechanism that prevents automatic restarting of unmonitored equipment until manual intervention occurs.
• Sight-Set Calibration: Displays a visible, calibrated pressure scale for easy adjustments through the range without needing to remove the cover.
• All-Steel Housing: Features a durable all-steel case and cover providing rugged protection for internal bellows and electrical components.

Specifications

• Pressure Range: 50 to 500 psi (adjustable)
• Pressure Differential: 60 psi
• Switch Action: SPST (Open on High)
• Reset Type: Manual Reset
• Process Connection: 1/4 inch Stainless Steel Female NPT
• Enclosure Rating: NEMA 1 (Indoor Use)
• Maximum Working Pressure: 525 psig
• Rated Voltage: 120V AC / 208V AC / 240V AC

Applications

• High-pressure cutout control for commercial refrigeration and HVAC systems.
• Compressor protection against excessive system pressures in ammonia-based refrigeration.
• High-side pressure monitoring for industrial air conditioning and unmonitored mechanical systems.