Johnson Controls P100CP-158 Encapsulated Pressure Control
The Johnson Controls P100CP-158 is a direct-mount encapsulated pressure control engineered for reliable high-side pressure protection in commercial and industrial HVAC and refrigeration systems. Featuring an open-construction design with automatic reset, this SPST control opens on pressure rise to safeguard compressors and refrigerant circuits from dangerous overpressure conditions.
Key Features
- Encapsulated pressure control with open construction design
- Direct-mount configuration for simplified installation
- SPST (Single-Pole, Single-Throw) switching action — opens on pressure rise
- Automatic reset for hands-free recovery after pressure normalization
- Open set point: 250 PSIG
- Close (reset) set point: 150 PSIG
- Contact ratings: 120/240 Vac
Specifications
- Brand: Johnson Controls
- SKU / Part Number: P100CP-158
- Switch Type: SPST
- Action: Open on Pressure Rise
- Construction: Open
- Mount Type: Direct Mount
- Open Pressure: 250 PSIG
- Close Pressure: 150 PSIG
- Contact Voltage Rating: 120/240 Vac
- Reset Type: Automatic
Applications
- High-side pressure protection in refrigeration and air conditioning systems
- Compressor protection against overpressure conditions
- Commercial HVAC equipment control circuits
- Industrial refrigeration pressure monitoring and safety shutoff








