The Johnson Controls P70CA-3 is a single-pole, single-throw (SPST) high pressure control engineered for reliable refrigeration and HVAC system protection. Configured to open on pressure rise and close on pressure drop, this control provides automatic high-side pressure safety cutout to safeguard compressors and refrigeration circuits from damaging overpressure conditions.
Key Features
- Open High / Close Low SPST switching action for automatic high-pressure cutout
- Wide operating pressure range: 50 PSI to 450 PSI
- Adjustable differential range: 60 PSI to 150 PSI
- Maximum allowable overpressure: 525 PSIG for added system safety
- 36″ capillary tube with 1/4″ flare nut pressure connector for easy field installation
- Compatible with “All Range” R-12 and other applicable refrigerants
Specifications
- SKU: P70CA-3
- Brand: Johnson Controls
- Switch Type: SPST (Single Pole, Single Throw)
- Action: Open on High Pressure / Close on Low Pressure
- Pressure Range: 50 PSI – 450 PSI
- Differential Range: 60 PSI – 150 PSI
- Maximum Overpressure: 525 PSIG
- Capillary Length: 36″
- Pressure Connection: 1/4″ Flare Nut
- Refrigerant Compatibility: R-12 (“All Range”)
Applications
The P70CA-3 is ideal for use in commercial refrigeration systems, air conditioning equipment, and other HVAC applications requiring dependable high-pressure protection. The 36″ capillary tube provides installation flexibility, while the 1/4″ flare nut connector ensures a secure, leak-free pressure tap connection. The broad 50–450 PSI operating range and wide differential adjustment make this control adaptable across a variety of system configurations.
