Johnson Controls P72AA-27C Pressure Control

Johnson Controls P72AA-27C Pressure Control is an adjustable differential pressure control engineered for dependable condenser fan cycling, air conditioning, and commercial refrigeration systems. It offers an operating range of 100 to 400 PSI with a differential span of 35 to 200 PSI and a maximum line pressure of 475 PSI, ensuring stable head-pressure control under varying load and temperature conditions. The unit supports multiple electrical configurations and a 1/4 inch flare nut connection for robust, leak‑free installations.

Designed for versatility and durability, the P72AA-27C uses DPST, 4‑circuit contacts to reliably switch multiple circuits. It’s built to accommodate a wide range of voltages and currents, making it compatible with common HVACR equipment in both residential and commercial settings. Applications include condenser fan cycling, air conditioning, head-pressure control, and commercial refrigeration.

• Operating pressure: 100–400 PSI; Differential: 35–200 PSI; Max line pressure: 475 PSI
• DPST, 4‑circuit contact configuration
• Electrical ratings: 120 VAC 1‑phase 24 A / 2 HP; 208 VAC 1‑phase 18.7 A / 3 HP; 240 VAC 1‑phase 17 A / 3 HP; 208 VAC 3‑phase 15.9 A / 5 HP; 220 VAC 3‑phase 15 A / 5 HP; 120–600 VAC 125 VA; 120–300 VDC 57.5 VA
• Connection: 1/4 inch flare nut
• Enclosure: NEMA 1/3R
• Capillary length: 36 inches
• Applications: condenser fan cycling, air conditioning, head-pressure control, commercial refrigeration

With a rugged NEMA 1/3R enclosure and a long capillary for flexible mounting, this control delivers reliable performance in demanding HVACR environments. Choose the P72AA-27C for precise, maintenance‑friendly pressure control that supports efficient system operation and energy savings.