The Johnson Controls P100CA-1 is a rugged encapsulated pressure control engineered for reliable, direct-mount installation in commercial and industrial HVAC and refrigeration systems. Featuring a Single-Pole Single-Throw (SPST) switching action that opens on pressure rise, this control provides dependable high-side pressure protection to safeguard compressors and refrigeration circuits from damaging over-pressure conditions.
How It Works
The P100CA-1 monitors system refrigerant or fluid pressure and automatically opens its electrical contacts when pressure reaches the set trip point. Once system pressure drops back to the reset threshold, the automatic reset function restores normal operation without manual intervention — minimizing downtime and service calls.
Key Specifications
- SKU / Model: P100CA-1
- Brand: Johnson Controls
- Control Type: Encapsulated Pressure Control
- Mounting Style: Direct Mount
- Switch Configuration: SPST (Single-Pole Single-Throw)
- Action: Open on Pressure Rise
- Construction: Open Construction
- Contact Voltage Rating: 120/240 Vac
- Cut-Out (Open) Set Point: 400 PSIG
- Cut-In (Close) Set Point: 300 PSIG
- Reset Type: Automatic Reset
Features & Benefits
- Encapsulated design protects internal components from moisture, dust, and contaminants for extended service life
- Direct-mount configuration simplifies installation directly onto refrigerant lines or system ports — no remote sensing bulb required
- SPST open-on-rise action provides straightforward high-pressure cut-out protection
- Dual-voltage contact rating (120/240 Vac) offers flexibility across a wide range of electrical systems
- Automatic reset resumes normal operation once pressure falls to the 300 PSIG close point, reducing manual reset requirements
- Open construction allows for easy field inspection and wiring access
- Trusted Johnson Controls quality ensures consistent, long-term performance in demanding HVAC and refrigeration applications
Typical Applications
- Commercial refrigeration high-side pressure protection
- HVAC compressor over-pressure cut-out
- Chiller and condensing unit pressure safety circuits
- Industrial process pressure monitoring and control
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