P100DC-3C Johnson Controls Pressure Control

Overview

The Johnson Controls P100DC-3C is a compact, encapsulated pressure switch designed for precise, direct-mount, snap-action On/Off control in commercial air conditioning and refrigeration systems. Engineered to monitor and manage pressure levels safely, this non-adjustable control opens the electrical circuit on a pressure rise at a pre-calibrated limit of 375 PSIG. It features a heavy-duty, dust-tight encapsulated design that ensures exceptional reliability and longevity even under demanding ambient conditions.

Features

• Manual Reset Lockout: Provides a trip-free manual reset mechanism that ensures the system cannot be overridden or restarted by holding the button down until the pressure drops to a safe level.
• Compact and Lightweight Construction: The direct-mount, space-saving design allows for easy mounting directly onto refrigeration piping or pressure tap points without extra support.
• Encapsulated Switch Body: Completely sealed and dust-tight housing protects internal contacts from harsh environmental elements and moisture.
• High Precision: Factory-calibrated, tamper-proof pressure settings provide repeatable, precise cutout control.
• Conduit Box Enclosure: Equipped with an integrated conduit clamp or box arrangement for secure electrical connections.

Specifications

• Part Number: P100DC-3C
• Pressure Setting: 375 PSIG (Opens on rise)
• Reset Type: Manual Reset (Open High action)
• Switch Type: Single-Pole, Single-Throw (SPST)
• Voltage Rating: 120/240 VAC
• Full Load Amps: 5.8 FLA at 120 VAC / 2.9 FLA at 240 VAC
• Locked Rotor Amps: 34.8 LRA at 120 VAC / 15.0 LRA at 240 VAC
• Pilot Duty Rating: 375 VA at 120/240/277 VAC
• Pressure Connection: 1/4 inch female SAE flare fitting with built-in Schrader depressor
• Approximate Weight: 0.43 lbs

Applications

• High-Pressure Safety Cutout: Primary use as a high-limit safety control to protect compressors and systems from over-pressurization.
• Commercial Air Conditioning: Integrates seamlessly into rooftop units, chillers, and split systems.
• Commercial and Industrial Refrigeration: Suitable for food service equipment, ice machines, walk-in coolers, and refrigeration condensers using non-corrosive refrigerants.