P170AB-2C Johnson Controls Pressure Control

Overview

The Johnson Controls P170AB-2C is a high-performance electromechanical low pressure control switch from the PENN P170 series. Designed primarily for low-side pressure control, it regulates non-corrosive refrigerants in commercial refrigeration and air conditioning applications. It features an all-steel case and cover to provide rugged protection for internal components, ensuring long-lasting reliability in demanding commercial environments.

Features

• Sight-Set Calibrated Pressure Adjustment: Displays a visible pressure scale that allows for complete adjustment through the operating range without needing to remove the enclosure cover.
• Rugged Construction: Built with an all-steel case and cover designed to protect internal mechanical elements.
• NEMA 1 Enclosure: Includes an integrated adjustment knob for simple manual configurations.
• Micro-Set Differential Option: Mounted directly on the differential screw to restrict over-adjustment and prevent unauthorized tampering.

Specifications

• Brand: Johnson Controls / PENN
• Model: P170AB-2C
• Pressure Range: 20 in. Hg to 100 PSI (or -68 to 690 kPa)
• Pressure Differential: Adjustable from 7 to 50 PSI (or 48 to 345 kPa)
• Switch Action: Single-Pole Single-Throw (SPST) Open Low (opens on pressure drop)
• Pressure Connection: 1/4 inch External Flare Connector
• Maximum Working Pressure: 100 PSIG
• Maximum Overpressure: 325 PSIG
• Electrical Ratings: 120 to 240 VAC, 1-phase motor compatibility (2 hp at 120 VAC, 3 hp at 208/240 VAC)

Applications

The P170AB-2C is engineered for low-side pressure supervision in commercial cooling applications. It is primarily utilized as a low-pressure cut-out control, pump-down control, and capacity control switch for commercial refrigeration systems and air conditioning units. It is optimized for use with standard non-corrosive refrigerants, air, water, and other compatible non-corrosive fluids.