Description
Johnson Controls P70SA-1 Dual Pressure Control Overview
The Johnson Controls P70SA-1 is a heavy-duty dual pressure control engineered for reliable refrigeration and HVAC system protection. Featuring two independent SPDT switching circuits in a single compact package, this control simultaneously monitors both the low-side and high-side refrigerant pressures — providing comprehensive system safeguarding in one device. The convertible high-side reset and selectable automatic/manual lockout give technicians the flexibility to configure the control to match the demands of the application.
Key Features
- Dual pressure control monitors both low-side and high-side refrigerant pressures simultaneously
- Two SPDT (Single-Pole Double-Throw) switches for independent low-side and high-side circuit control
- Low-side pressure range: 12 to 80 PSI
- High-side pressure range: 100 to 425 PSI
- 36″ capillary tube for flexible installation and remote sensing
- Convertible high-side reset — field-selectable for automatic or manual lockout operation
- NEMA 1 enclosure for indoor, general-purpose protection
- No adjustment knob — clean, tamper-resistant design
Pressure Specifications
- Low-Side Cut-Out Range: 12 to 80 PSI
- High-Side Cut-Out Range: 100 to 425 PSI
- Capillary Length: 36 inches
Switching & Electrical
- Switch Type: Two SPDT (Single-Pole Double-Throw)
- Enclosure Rating: NEMA 1 (indoor, general-purpose)
Reset & Lockout Options
- High-side reset is convertible — configure for automatic reset or manual lockout in the field
- Automatic/Manual lockout selection provides application-specific fault management
Typical Applications
- Commercial refrigeration systems
- Air conditioning and heat pump equipment
- Chiller and condensing unit protection
- Any application requiring simultaneous low-side and high-side pressure monitoring
Why Choose the Johnson Controls P70SA-1?
The P70SA-1 combines the functionality of two pressure controls into a single, cost-effective unit. The wide pressure ranges cover a broad spectrum of refrigerants and system types, while the convertible reset and lockout options make it adaptable to both critical and standard applications. The NEMA 1 enclosure and no-knob design ensure a clean, protected installation in mechanical rooms and equipment panels.
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