Description
The Johnson Controls P70MA-1 is a commercial-grade Single Pole Dual Pressure Control designed to monitor and protect refrigeration and HVAC systems by simultaneously sensing both low-side and high-side pressures. Featuring SPST (Single Pole, Single Throw) switching action, this dual pressure control provides reliable system protection with a manual-reset lockout on the high-pressure differential — ensuring a technician must physically reset the control before the system can restart after a high-pressure trip event.
Pressure Ranges
- Low Pressure Range: 20″ WC to 100 PSI
- Low Pressure Differential: 7 PSI to 50 PSI
- High Pressure Range: 100 PSI to 500 PSI
- High Pressure Differential: Lockout — Requires Manual Reset
Key Features
- SPST switching for straightforward circuit control
- Dual pressure sensing — monitors both low and high sides simultaneously
- Manual reset lockout on high-pressure differential for added system protection
- 36″ capillary for flexible installation and remote sensing capability
- Durable construction suited for commercial refrigeration and HVAC applications
Applications
- Commercial refrigeration systems
- Air conditioning and heat pump equipment
- Compressor protection and safety cutout
- Any application requiring simultaneous low- and high-side pressure monitoring
Why Choose the Johnson Controls P70MA-1?
The P70MA-1 combines wide-range pressure sensing with a safety-first manual reset lockout, making it an ideal choice for protecting compressors and refrigeration circuits from damaging pressure excursions. The 36″ capillary provides installation flexibility, while the robust SPST switching ensures dependable circuit control in demanding commercial environments. Trust Johnson Controls engineering for long-lasting, reliable pressure protection.
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