Johnson Controls P145NCA-82 Lube Oil Pressure Cutout Control
The Johnson Controls P145NCA-82 is a lube oil pressure cutout control engineered to protect compressors from damage caused by inadequate lubrication pressure. With a built-in 45-second time delay on startup, the control allows oil pressure to stabilize before monitoring begins — preventing nuisance trips during normal startup sequences. Manual reset ensures that any fault condition requires deliberate technician intervention before the system is returned to service, supporting safe and compliant operation.
Key Features
- 45-second time delay on startup for stable oil pressure establishment
- Manual reset operation — requires technician action after a fault trip
- Dual voltage compatibility: 120/240 Vac for flexible installation
- 425 PSIG maximum bellows pressure rating for high-pressure system compatibility
- 6.5 PSI fixed differential for consistent and repeatable cutout performance
- 1/4″ Male Flare pressure connection for easy field installation
Specifications
- SKU: P145NCA-82
- Brand: Johnson Controls
- Control Type: Lube Oil Pressure Cutout
- Time Delay: 45 Seconds
- Voltage: 120/240 Vac
- Reset Type: Manual Reset
- Maximum Bellows Pressure: 425 PSIG
- Fixed Differential: 6.5 PSI
- Pressure Connection: 1/4″ Male Flare
Application
The P145NCA-82 is ideal for commercial and industrial refrigeration and HVAC compressor protection applications. It monitors net oil pressure differential to ensure the compressor’s lubrication system is functioning correctly. If oil pressure falls below the required threshold after the startup delay period, the control trips and locks out the compressor, preventing costly mechanical damage. The manual reset feature ensures the root cause is addressed before restart.
