P70BA-1C Johnson Controls Pressure Control

Overview

The Johnson Controls P70BA-1C is an adjustable low-pressure control switch designed primarily for commercial refrigeration and air conditioning applications. It provides critical low-pressure cut-out, pump-down control, and capacity control for systems using non-corrosive refrigerants. Housed in a rugged all-steel enclosure, this device protects internal components in demanding commercial environments.

Features

• Rugged Protection: Built with a heavy-duty all-steel case and cover to safeguard internal mechanisms.
• Sight-Set Calibration: Features a visible calibrated pressure adjustment scale, allowing easy adjustments without removing the cover.
• Manual Reset Lockout: Provides a trip-free manual reset mechanism that ensures the system cannot automatically restart or be overridden until pressure safely returns to the specified level.
• Premium Sensing: Utilizes a bellows element type for accurate and dependable pressure tracking.

Specifications

• Pressure Range: 20 inches Hg to 100 psi
• Differential: 7 psi
• Switch Action: Single-Pole Single-Throw (SPST), open on low pressure drop
• Pressure Connection: 1/4-inch female flare with a 36-inch capillary tube
• Electrical Ratings: Rated for 120V AC and 208/240V AC
• Enclosure Rating: NEMA 1 standard

Applications

• Low-pressure cut-out control for commercial refrigeration systems
• Pump-down control configurations in air conditioning units
• Unmonitored equipment shutdown and protection strategies
• Non-corrosive fluid and air-side pressure monitoring applications