Johnson Controls P70AA-150 Pressure Control

The Johnson Controls P70AA-150 is a heavy-duty single pole high pressure control designed for demanding commercial refrigeration and HVACR applications. As a veteran-grade fan cycling control, it features an SPST switch with a "Close High, Open Low" action, making it an essential component for maintaining optimal head pressure in systems using non-corrosive refrigerants. This mechanical pressure switch operates within a versatile range of 100 to 400 psi, factory-calibrated to open at 150 psig and close at 200 psig.

Built with an all-steel case and the legendary PENN pressure control "Sight-Set" calibrated scale, the P70AA-150 ensures accurate field adjustments and long-term reliability against compressor vibration. The unit includes a 36-inch capillary with 1/4" flare nut for flexible mounting and a universal bracket for easy installation. Note that the P70AA-150 is identical to P70AA-150C, ensuring seamless HVACR pressure switch replacement for contractors servicing legacy or modern systems.

Key Benefits:

• Rugged Construction: Durable all-steel housing protects the internal bellows and snap-action contacts from industrial environments.
• Precise Fan Cycling: Optimizes condenser performance by governing motor operation based on high-side discharge pressure.
• Universal Compatibility: The 1/4" flare nut and extended capillary allow for versatile positioning on various refrigeration chassis.
• Direct Motor Control: Rated for high-current applications, capable of handling line-voltage motors within its electrical specifications.

Common Questions:

• Is this control compatible with R-410A systems? No, this model is designed for 100-400 psi ranges typically found in R-22 or R-134a head pressure applications; always check your maximum working pressure requirements.
• Can I use this for low-pressure cutout? This is a "Close High" action switch typically used for fan cycling or alarm circuits, not as a standard low-side safety cutout.
• What is the difference between the P70AA-150 and the "C" version? There is no functional difference; they are technically identical and interchangeable in the field.

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.