Description
The Johnson Controls P545NCB-25 is a professional-grade electronic lube oil control engineered to protect compressors in commercial and industrial refrigeration systems. Designed for use with non-corrosive refrigerants only, this control monitors differential oil pressure and shuts down the compressor before costly damage can occur.
Key Features
- Dual-voltage input: 120/240 VAC for flexible installation across a wide range of equipment
- 120-second time delay allows system oil pressure to stabilize at startup before the safety circuit is armed
- 10 PSI set point with ±1.5 PSID differential for precise, reliable low-oil-pressure detection
- Manual reset operation ensures a technician reviews and clears the fault condition before the system restarts
- Dedicated alarm output to alert building management or monitoring systems of a lockout event
- Liquid line solenoid output to de-energize the liquid line solenoid valve upon a fault, preventing refrigerant migration and compressor flooding
- Suitable for non-corrosive refrigerants only — verify refrigerant compatibility before installation
Specifications
- SKU: P545NCB-25
- Brand: Johnson Controls
- Supply Voltage: 120/240 VAC
- Time Delay: 120 Seconds
- Differential Pressure Set Point: 10 PSI ± 1.5 PSID
- Reset Type: Manual Reset
- Outputs: Alarm Output, Liquid Line Solenoid Output
- Refrigerant Compatibility: Non-Corrosive Refrigerants Only
Application
The P545NCB-25 is ideal for protecting semi-hermetic and open-drive compressors in commercial refrigeration, air conditioning, and process cooling applications. The built-in alarm and liquid line solenoid outputs make it easy to integrate into existing control panels and building automation systems, providing a complete compressor protection solution in a single device.
