Johnson Controls P170SA-1 Pressure Control

The Johnson Controls P170SA-1 is a robust dual pressure control designed for precise regulation of commercial refrigeration and air conditioning systems. This unit features two independent SPDT switch action mechanisms, allowing for simultaneous monitoring of high and low side conditions. The low pressure side provides a range of 12" Hg to 80 psi with an adjustable differential of 5 to 35 psi, while the high pressure side operates between 100 and 500 psi. Equipped with a manual reset lockout on the high-pressure side (fixed at 65 psi), it ensures system safety by preventing automatic restarts after a high-limit trip. This model utilizes standard 1/4" external flare connectors for reliable field installation. The P170SA-1 is technically identical to the P170SA-1C, providing a direct cross-reference for contractors replacing legacy Penn or Johnson Controls HVAC pressure switches. Its non-corrosive enclosure and high-rating contacts make it a staple for maintaining head pressure and compressor protection in demanding environments.

• Dual-circuit flexibility through independent SPDT switches for separate high and low pressure signaling.
• Manual reset safety ensures high-pressure limit trips are investigated before system reactivation.
• Standardized connectivity with 1/4" male flare fittings for seamless integration into existing refrigeration lines.
• Wide application range suitable for various non-corrosive refrigerants in commercial cooling systems.
• Direct interchangeability with the P170SA-1C, simplifying inventory and field replacements.

Is the high-pressure differential adjustable on this model?
No, the P170SA-1 features a fixed high-pressure differential with a manual reset lockout, whereas the low-pressure side is fully adjustable within its specified range.

Can this control be used with R-410A systems?
Yes, the 500 psi high-side rating is compatible with common high-pressure refrigerants, provided the system operating parameters fall within the control's specified range.

What is the difference between the P170SA-1 and the P170SA-1C?
These two part numbers are functionally and physically identical; the 'C' suffix typically denotes bulk packaging or specific regional distribution channels but retains identical technical specifications.

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.